Search Results — 2000 specimen records retrieved (1587 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  SEINET11305032  Abies concolor var. lowiana D. Charlet 1996-7-8 2287 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1622 Comment
  CAS-BOT-BC330610  Acer glabrum var. glabrum Clare B. Hardham 1969-8-28 17438 Lassen Sierra Nevada. West of Janesville. Comment
  CHSC27595  Achillea millefolium Jeff D. Prouty 1978-7-10 27 Lassen W shore of Coleman Lake, S of Eagle Lake L. 1956 Comment
  CHSC60271  Achillea millefolium P. V. Caldwell 1972-6-23 245 Lassen Headwaters of Willow Creek, Upper Murer's Meadow. Comment
  JEPS36915  Achillea millefolium Brown and Wieslander 1922-7-30 18 Lassen meadow near Martin Springs; Eagle Lake Comment
  UC1136757  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-14 F 275 Lassen Patterson Flat 1737 Comment
  UC74065  Achillea millefolium J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat; Long Valley Comment
Read comments
Jan 7 2012
  SEINET11842145  Achillea millefolium Unknown 1978-1 30 Lassen Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite. T29N, R10E, sec. 24 1500 Comment
  CAS-BOT-BC260405  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia Comment
  CHSC60791  Achnatherum hymenoides Vernon H. Oswald; Lowell Ahart 1993-6-14 5544 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89) 1566 Comment
  RSA647518  Achnatherum hymenoides Marion P. Harthill 1972-6-16 777 Lassen Doyle 1372 Comment
  UCD50337  Achnatherum hymenoides Grady L. Webster 1989-5-13 7717 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  RSA152596  Achnatherum hymenoides I. L. Wiggins, Dorothy Wiggins 1961-6-11 16335 Lassen 13.5 miles east of Susanville. Comment
  SEINET10958804  Achnatherum hymenoides Lawrence P. Janeway 1990-7-4 Janeway 3769 Lassen McKesick Peak quad T25N, R16E, NW1/4 of sec. 4. Dry gravelly bench near east-side of saddle ca. 0.8 mi NE of Meadowview Peak. Granitic substrate; with sagebrush/ephedra scrub. 1981 Comment
  CAS-BOT-BC210661  Achnatherum lemmonii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50644 Lassen South and southeast of Diamond Mt. 2286 Comment
  UC1024816  Achnatherum lemmonii Leo Whitney 1935-6-19 3263 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1137653  Achnatherum lemmonii George A. Fisher and Irwin H. Johnson F 198 Lassen Grass Valley Lassen National Forest 1696 Comment
  UCD50700  Achnatherum lemmonii G. L. Stebbins Jr.; J. A. Jenkins 1937-7-11 2323 Lassen Black Mt. about mile below summit. Lassen County. 1950 Comment
  UCD18959  Achnatherum nelsonii Jack N. Reppert 1965-7-13 17 Lassen Lassen National Forest, Harvey Valley Allotment (HV-17). 1682 Comment
  UCD50787  Achnatherum nelsonii R. Tofsrud 1947-7-1 221 Lassen 13 miles E of Madeline. Comment
  SBBG115546  Achnatherum nevadense B. Crampton 1960-6-18 5729 Lassen S Warner Mts, ca. 1.25 mi N of Blue Lake, in vicinity of Blue Lake Ranch 1981 Comment
  CAS-BOT-BC216849  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-7-31 50059 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  UCD51042  Achnatherum occidentale subsp. californicum L. Whitney 1935-6-23 3296 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  RSA129480  Achnatherum occidentale subsp. occidentale G. A. Fischer, I. H. Johnson 1933-7-12 F- 199 Lassen Grass Valley 1697 Comment
  UC1133257  Achnatherum occidentale subsp. occidentale H. P. Hagge 1929-9-17 38 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  CAS-BOT-BC218613  Achnatherum occidentale subsp. pubescens John Thomas Howell; Gordon H. True 1973-7-31 50033 Lassen On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  CAS-BOT-BC218616  Achnatherum occidentale subsp. pubescens Margaret Williams; Steven Williams 1974-7-26 74 -L-37 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  UC773977  Achnatherum occidentale subsp. pubescens L. R. Short and J. Warren 1936-6-29 S- 462 Lassen Burgess Spring Experimental Range Lassen National Forest 1820 Comment
  CHSC29880  Achnatherum thurberianum Robin L. Ondricek 1978-6-8 47 Lassen Ridge E of Lower Dry Lake. 1798 Comment
  JEPS107797  Achnatherum thurberianum Lowell Ahart, John Dittes 2005-6-2 11946 Lassen About 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, about 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  SEINET235272 Image available Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  UCD32671  Achnatherum webberi Beecher Crampton 1954-7-6 2074 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  UCD51301  Achnatherum webberi Beecher Crampton 1954-7-6 2074 Lassen Along US Hwy 395, 15 miles south of Ravendale. 1676 Comment
  CHSC29950  Acmispon americanus var. americanus Robin L. Ondricek 1978-6-8 51 Lassen Murrers Upper Meadow, .6 mi E of inersection with main rd. to ELFS. 1554 Comment
  CHSC30612  Acmispon denticulatus L. Maslin 1975-7-1 12 Lassen On the road to Lower Dry L. from Eagle Lake Field Station, 2 mi. ELFS. 1524 Comment
  CHSC68867  Actaea rubra Vernon Oswald; Lowell Ahart 1997-6-24 8612 Lassen South of Susanville on the north side of Diamond Mtn. at a slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  CAS-BOT-BC110715  Aegilops cylindrica John Thomas Howell 1974-7-8 50505 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC25082  Agastache parvifolia K. R. Stern 1967-6-30 2455 Lassen West Central side of Eagle Lake. 1554 Comment
  CHSC60832  Agastache parvifolia Vernon H. Oswald; Lowell Ahart 1993-6-28 5619 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  JEPS87414  Agastache parvifolia Vernon H. Oswald and Lowell Ahart 1993-6-28 5619 Lassen e Poison Lake (n of Hwy 44 along Rd 33N47 at the ne end of Little Harvey Valley, between Champs Flat and Harvey Valley, bordering Pine Creek); ne end of Little Harvey Valley, Pine Creek 1737 Comment
  SEINET10814664  Agastache parvifolia Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 847 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44. 1971 Comment
  UC1609441  Agastache parvifolia Vernon H. Oswald and Lowell Ahart 1993-6-28 5619 Lassen e Poison Lake (n of Hwy 44 along Rd 33N47 at the ne end of Little Harvey Valley, between Champs Flat and Harvey Valley, bordering a drying branch of Pine Creek); ne end of Little Harvey Valley, Pine Creek 1737 Comment
  UC104571  Agastache urticifolia F. Stephens 1894-7-15 Lassen Madeline Divide Comment
  UC1037267  Ageratina occidentalis Leo Whitney 1933-8-27 1797 Lassen 14 mi w Eagle Lake (Harvey Lookout); Lassen National Forest, Harvey Valley 2225 Comment
  UC1483833  Ageratina occidentalis G. Schoolcraft 1979-8-15 180 Lassen Tule Mountain area Tule Mountain 2042 Comment
  HSC63943  Ageratina occidentalis Teresa Prendusi 1980-7-16 Lassen Willow Creek 1463 Comment
  CHSC7649  Agoseris aurantiaca Beverly J. Wise 1969-5-18 10 Lassen Alongside Susan River. 1615 Comment
  CHSC71219  Agoseris glauca var. laciniata Vernon H. Oswald; Lowell Ahart 1998-6-4 9142 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  JEPS100463  Agoseris grandiflora Dean W. Taylor 2001-6-28 17818 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  JEPS103193  Agoseris grandiflora G. Schoolcraft 2000-6-19 2904 Lassen West of Cold Spring Valley 1706 Comment
  CAS-BOT-BC22894  Agoseris heterophylla John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49168 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC91310  Agoseris heterophylla Lowell Ahart; John Dittes 2005-6-1 11885 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction. 1438 Comment
  CAS-BOT-BC433230  Agoseris heterophylla K. L. Chambers; Peter G. Dorris 1963-5-11 s.n. Lassen Red Rock Road, just east of Hwy. 395 (and just w. of Nevada State Line), ca. 10 mi. n. of Hwy. 70 junction, and s. of Constantia. Comment
  UC1924573  Agoseris heterophylla var. heterophylla Debra Valov 2006-5-29 2006023 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1280 Comment
  CHSC36467  Agoseris retrorsa Jeffrey R. Peek 1982-6-3 28 Lassen Ca. .6 mi W jct forest service rds 5.16 and 5.17, ca. 10 yd E 5.16 heading over Black Mtn. Comment
  UCR7835  Agropyron cristatum Marilyn Malin 1968-6-21 247 Lassen Brockman Flats Lava Bed,W side of Eagle Lake, site of 1956 Merrill burn 1600 Comment
  CHSC66418  Agropyron desertorum Vernon H. Oswald; Lowell Ahart 1996-6-17 7800 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Ca.0.1 mi E of Devils Corral Trialhead. 1420 Comment
  UCD18954  Agropyron saundersii Jack N. Reppert 1965-7-12 24 Lassen Lassen National Forest, Harvey Valley Allot. (HV 17-11). 1682 Comment
  SEINET10964052  Agropyron trachycaulum R. Ondricek 1978-8-2 Ondricek 113 Lassen North edge of dam at Murrers Upper Meadow. T32N, R11E, E edge of Sec. 26, Fredonyer Peak Quadrangle, 15 ft. 1548 Comment
  CAS-BOT-BC127237  Agrostis exarata John Thomas Howell; Gordon H. True 1973-7-31 50021 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1737 Comment
  HSC95196  Agrostis exarata Gordon Leppig, J. Cromwell 1997-7-27 628 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  RSA299261  Agrostis exarata J. T. Howell, Gordon H. True 1973-8-1 50226 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville Comment
  UC1037106  Agrostis exarata Leo Whitney 1934-9-1 3000 Lassen Fredonyer Campground Lassen National Forest 1706 Comment
  CAS-BOT-BC139675  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49484 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC139450  Agrostis hyemalis Leo Whitney 1933-8-4 2228 Lassen Meadow near Sheepshead. 1889 Comment
  RSA299277  Agrostis idahoensis J. T. Howell, Gordon H. True 1973-8-1 50232 Lassen Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville 2134 Comment
  UCD53118  Agrostis pallens Beecher Crampton 1960-6-20 5732 Lassen Halls's Flat, 1/2 mile south Black's Mtn. Exper. Sta. USDA, 11 miles n.w. Bogard Ranger Station, Lassen Natl. Forest. 1706 Comment
  CAS-BOT-BC138802  Agrostis scabra John Thomas Howell 1973-7-10 49768 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  CAS-BOT-BC138625  Agrostis stolonifera John Thomas Howell 1973-7-10 s.n. Lassen Sierra Nevada. In city park, Susanville. 1295 Comment
  JEPS123839  Agrostis stolonifera Lowell Ahart, John Dittes 2015-7-14 20335 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC188820  Agrostis variabilis Milo S. Baker July 1894 Lassen Comment
  HSC63727  Aliciella leptomeria Teresa Prendusi 1980-5-19 1134 Lassen Saddle Rock. 1524 Comment
  UCD149882  Aliciella leptomeria Harry George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  CHSC111099  Alisma triviale Lowell Ahart; John Dittes 2012-7-9 18294 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS124713 Image available Alisma triviale P. Matteson 1968-7-9 86 Lassen 1.6 mi. N. of intersection of HWY 139 and Horse Lake Road. Comment
  JEPS124714 Image available Alisma triviale P. Matteson 1968-7-9 86 Lassen 1.6 mi N of intersection of HWY 139 and Horse Lake Rd. Comment
  SEINET8193719  Allium M. J. Williams 1969-6-14 s.n. Lassen Ravendale. 1615 Comment
  CHSC5928  Allium acuminatum R. Gein 1946-6-17 Lassen Horse Lake near Mt. Fredonyer. 1554 Comment
  UC1483842  Allium acuminatum G. Schoolcraft 1980-6-5 250 Lassen ne side of Snowstorm Mountain Snowstorm Mountain 1584 Comment
  UC843269  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen e Fredonyer Pass (on Highway #36) 1645 Comment
  CAS-BOT-BC461096  Allium anceps B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6553 Lassen Just S of Ravendale 1580 Comment
  SEINET222604 Image available Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Hwy 395, 3 mi. S of Ravendale. Comment
  NY247822  Allium bidwelliae R. M. Austin 06 1879 s.n. Lassen Pine Creek Meadows. Comment
  JEPS26135  Allium lemmonii L. R. Short 1936-6-10 S- 416 Lassen Burgess Spring Experiment Range 1798 Comment
  SEINET8122319  Allium lemmonii G. Schoolcraft 1993-1 2287 Lassen Clark Valley Road, ca 9.5 miles E of Madaline. 1829 Comment
  UCD138558  Allium lemmonii A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3366 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  HSC67118  Allium lemmonii Dale McNeal 1980-6-1 2338 Lassen Beside Hwy. 139, 32.4 mi. S of junction with Hwy. 299 in Adin Comment
  HSC84126  Allium lemmonii Dale McNeal 1983-6-6 2846 Lassen Beside Hwy. 395, 4.5 mi. S of Modoc County line Comment
  POM260464  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  SEINET10532723  Allium lemmonii David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17786 Lassen 6 miles n of hallelujah jct. On u.s. Hwy 395, in artemisia tridentata, pinyon Pine, jeffery pine along high ridge & in sandy wash 1402 Comment
  SEINET3885788  Allium lemmonii D. W. McNeal 1978-5-30 2129 Lassen Beside Highway #395, 1.9 mi. South of Ravendale.; 0 Comment
  UC2042973  Allium lemmonii Barbara Ertter 1990-5-13 8966 Lassen McCoy Road N of Westwood, 0.3 mi S of Highway 44 on E side of McCoy Flat. Comment
  SEINET12058087  Allium parvum Unknown 1992-3-31 618 A Lassen Ash Valley, ca 15 road mi SE of Adin via Ash Valley Road Comment
  CHSC68887  Allium platycaule Vernon Oswald; Lowell Ahart 1997-6-24 8624 Lassen South of Susanville on the north side of Diamond Mtn. On Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. 2164 Comment
  JEPS94546  Allium platycaule Vernon Oswald and Lowell Ahart 1997-6-24 8624 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 21N52, 1.0 mi sw of its junction with 29N43); Diamond Mountain, Forest Road 21N52 2164 Comment
  SEINET3878898  Allium platycaule D. W. McNeal 1980-6-1 2339 Lassen In open areas on the slope below Hwy #139, 19.2 mi S of the Modoc Co. line.; 0 Comment
  CHSC91199  Alnus incana subsp. tenuifolia Lowell Ahart; John Dittes 2005-6-2 11945 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  NY526213  Alnus incana subsp. tenuifolia G. Schoolcraft 1982-8-18 887 Lassen Along Doyle Grade Road, west of Doyle 1554.5 Comment
  UC576312  Alopecurus aequalis H. S. Yates 1936-8-12 6082 Lassen McKenzie Meadow Susanville Quad., McKenzie Meadow 1524 Comment
  UC790958  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen 10 mi. w. Chester (Rte. 36) Comment
  JEPS127279  Alopecurus carolinianus Lowell Ahart, John Dittes 2016-7-13 21142 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC99293  Alopecurus geniculatus Lowell Ahart; John Dittes 2008-6-20 14960 Lassen About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS118454  Alopecurus geniculatus Lowell Ahart, John Dittes 2011-6-20 17504 Lassen In the small stream, about 80 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC53353  Alopecurus geniculatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3372 Lassen Honey Lake Valley Comment
  CHSC54178  Alyssum minus subsp. micranthum Vernon H. Oswald 1991-5-28 4629 Lassen South end of Elkins Ln (100 ft south of Modoc-Lassen county line), Ash Creek Wildlife Area, ca. 7 miles northeast of Bieber. In meadow. 1267 Comment
  RSA0056301  Alyssum minus var. micranthum Lowell Ahart 2011-6-20 17493 Lassen About 20 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UCD114089  Alyssum simplex W. A. Harvey 1964-6-23 s.n. Lassen J. E. Albaugh ranch, ca. 4 miles southwest of Adin. Comment
  CHSC106172  Amaranthus blitoides Lowell Ahart; John Dittes 2010-8-30 17090 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  HSC31339  Amaranthus blitoides D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19304 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  JEPS95745  Ambrosia acanthicarpa Vernon H. Oswald and L. Ahart 1995-8-14 7191 Lassen T33N R14E SW1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 1.8 mi W of Hwy. 395, N of Susanville 1645 Comment
  SJSU13939  Ambrosia acanthicarpa N. A. Hopkins 1986-8-28 1378 Lassen by County Road 33 (Scott Road), lower Long Valley, N of Highway 70 & E of Beckwourth Pass Comment
  CHSC25302  Amelanchier pallida Pauleen Broyles 1977-5-30 147 Lassen Spencer Spring ca 8 km nne of Herlong. Canyon below spring. 1620 Comment
  JEPS28676  Amelanchier utahensis George W. Gillett 1957-7-26 903 Lassen Butte Lake Lassen Volcanic National Park (point of rocks w of outlet and above trail) 1844 Comment
  UC726025  Amelanchier utahensis A. A. Heller 1938-6-4 15144 Lassen about 1 mi e Fredonyer Pass 1706 Comment
  JEPS114650  Amsinckia intermedia Lowell Ahart, John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS107316  Amsinckia menziesii var. menziesii Lowell Ahart, John Dittes 2005-6-1 11899 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  HSC28822  Amsinckia tessellata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19277 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UCD159579  Anaphalis margaritacea D. S. Park 2011-8-24 316 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  POM36284  Ancistrocarphus filagineus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CAS-BOT-BC59216  Antennaria dimorpha John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49200 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC5193  Antennaria dimorpha 1945-6-1 Lassen Eagle Lake. 1584 Comment
  CHSC52381  Antennaria dimorpha B. G. Clark 1987-4-15 24 Lassen 100 ft from NE corner of undeveloped field adjacent to east of 705 Hall St, Susanville. Northern edge of city limits. 1297 Comment
  CHSC68729  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1997-5-27 8505 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  SEINET10671600  Antennaria dimorpha David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17794 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  RSA713120  Antennaria geyeri L. P. Janeway, B. Castro 2005-7-10 8478 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 & 28N02) and Road 28N01 1859 Comment
  UC1609122  Antennaria geyeri Vernon H. Oswald and Lowell Ahart 1993-6-14 5528 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Sandy Beach, w shore of Eagle Lake, upper beach between road and lake); Eagle Lake Rd 1566 Comment
  CAS-BOT-BC69140  Antennaria geyeri Clarence R. Quick 1964-7-29 64 -89 Lassen Blacks Mt. Experimental Forest 1798 Comment
  JEPS94608  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1997-5-27 8506 Lassen on Forest Route 38N04 0.3 mi n Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat) n of Susanville, between road and small creek n) 1560 Comment
  UC1609101  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1993-6-14 5527 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), upper beach between road and lake); Eagle Lake 1566 Comment
  UCD169450  Antennaria luzuloides Lowell Ahart; John Dittes 2005-6-1 11862 Lassen Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. About 1/2 mile west of Scott Road, on the east side of the poor dirt road. 1448 Comment
  CHSC92826  Antennaria luzuloides subsp. aberrans Lowell Ahart; John Dittes 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC1523723  Antennaria rosea Gary Schoolcraft 1982-8-10 865 Lassen se of, along Hwy 139 Adin 1584 Comment
  UC1523728  Antennaria rosea Gary Schoolcraft 1982-7-14 800 Lassen w of Constantia 1524 Comment
  UC1609102  Antennaria rosea Vernon H. Oswald and Lowell Ahart 1993-6-28 5589 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  UCR18725  Antennaria rosea Frank C. Vasek 1975-7-11 750711- 20 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CDA42997  Apera interrupta L. Ahart, John Dittes 2008-6-19 14868 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. Comment
  JEPS49803  Apocynum androsaemifolium Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  CHSC67063  Aquilegia formosa Willis Ball 1969-6-25 37 Lassen Found in Upper Murrer's Mdw. 1584 Comment
  CAS-BOT-BC392213  Aquilegia formosa Lassen 1927 G. S. Crew 1927-7-15 79 Lassen Lassen National Forest. Bogard R.S. 1725 Comment
  CHSC4814  Aquilegia formosa var. truncata R. Carter 1967-7-29 573 Lassen Found in Murrer's meadow, W side where canal runs. 1584 Comment
  UC1126589  Arabis glabra A. Simontacchi 1940-7-3 916 Lassen 2.6 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1935 Comment
  HSC30184  Arabis holboellii var. retrofracta D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19199 Lassen Harvey Valley near Cone Springs Comment
  HSC82265  Arabis holboellii var. retrofracta Thomas W. Nelson, Jane P. Nelson 1980-7-6 5992 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  SEINET10481537  Arabis puberula David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17764 Lassen Approx 12 mi s of adin on state hwy 139, in basalt and clay; along edge of rd on rolling knoll, in artemesia-juniper association. 1372 Comment
  NY119620  Arabis sparsiflora var. subvillosa R. C. Rollins 1981-5-31 81178 Lassen Just north of Eagle Lake Comment
  CHSC29858  Arceuthobium campylopodum Robin L. Ondricek 1978-8-8 118 Lassen On road to Lower Dry Lake, .1 mi ne of intersection with road which leads to main road to ELFS. 1609 Comment
  UC1037287  Arceuthobium campylopodum Leo Whitney 1934-7-15 1703 Lassen ca 15 mi w Eagle Lake; Lassen National Forest, Crater Mtn Comment
  CAS-BOT-BC45906  Arctostaphylos nevadensis Marcus E. Jones 1897-7-7 s.n Lassen Lassen's Peak 1828 Comment
  RSA46474  Arctostaphylos nevadensis Doris K. Kildale 1926-9-11 2764 Lassen Juniper Lake. 2055 Comment
  UC1137649  Arctostaphylos patula A. Simontacchi 1940-5-13 703 Lassen 4.1 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  UC773875  Arctostaphylos patula L. R. Short 1936-5-7 S- 346 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 Comment
  CHSC23558  Arctostaphylos patula subsp. patula W. O. Baum 1971-6-21 41 Lassen E slope of Gallatin Peak on fire trail. 1920 Comment
  CHSC36979  Arenaria aculeata M. S. Taylor; B. Hammond 1982-8-27 5056 A Lassen On ridge between Crystal and Adams Peaks, Diamond Mts, ca. 4 air mi sw of Constantia. 2225 Comment
  SEINET10537551  Arenaria aculeata Mary Susan Taylor 1982-8-27 Taylor 5056 A Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  UCR18731  Arenaria congesta Frank C. Vasek 1975-7-11 750711- 07 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  UC8100  Arenaria congesta var. congesta M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Mts. Comment
  UC1924211  Arenaria congesta var. subcongesta Debra Valov 2004-6-9 2004272 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  UC465891  Arenaria congesta var. subcongesta Franklin P. Nutting Lassen Dixey Valley Comment
  NY430990  Arenaria kingii subsp. plateauensis G. Schoolcraft 1982-6-23 729 Lassen Fort Sage Mountains 1920.2 Comment
  CHSC52769  Argemone munita subsp. rotundata L. P. Janeway 1990-7-4 3770 Lassen Dry gravelly bench near east-side of saddle 0.8 mi NE of Meadowview Peak. 1981 Comment
  RSA647527  Argemone munita subsp. rotundata Marion P. Harthill 1972-6-16 789 Lassen Doyle. Comment
  JEPS124519 Image available Argemone platyceras var. hispida P. C. Billigs 1965-7-12 77 Lassen 1.8 mi south of MIlford on Hwy 395 Comment
  CAS-BOT-BC82116  Arnica chamissonis John Thomas Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  JEPS35877  Arnica chamissonis C. S. Robinson 1927-7-15 77 Lassen Feather Lake, sw Lassen Co Feather Lake 1737 Comment
  JEPS35881  Arnica chamissonis Leland S. Smith 1918-7-22 1007 Lassen Blue Lake Modoc National Forest, Warner Range (w end), Blue Lake 1874 Comment
  CAS-BOT-BC82115  Arnica chamissonis Parkison 1916-7-21 36 Lassen Lassen Forest, Harvey Valley 1676 Comment
  RSA505386  Arnica chamissonis subsp. foliosa R. C. Bacigalupi, G. Thomas Robbins 1955-7-20 5414 Lassen Along Mosquito Creek in Corporation Meadow, Modoc National forest, southern end of Warner Mountains 2043 Comment
  UC485811  Arnica dealbata H. E. and S. T. Parks June 1928 236 Lassen Drakesbad Lassen National Park Comment
  CHSC115054  Arnica fulgens J. Moeller; S. Puentes 2008-5-14 Lassen DFG OCC #13. Along 33N02 Harvey Valley Road off HW 44, ~5.8 air miles east of Poison Lake. 1735 Comment
  CHSC64861  Arnica mollis Vernon H. Oswald; Lowell Ahart 1995-6-26 6921 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  UC1776719  Arnica parryi G. Schoolcraft 1997-8-1 2386 Lassen About 2 miles W of Boot Lake 2255 Comment
  SEINET3358258 Image available Artemisia arbuscula A. A. Beetle 1957-8-16 12763 Lassen Between Susanville and Johnstonville. Comment
  CAS-BOT-BC85001  Artemisia arbuscula subsp. arbuscula R. K. Gierisch; D. H. Esplin 1969-8-27 3599 Lassen Lassen 1706 Comment
  SD117633  Artemisia arbuscula subsp. arbuscula Jack L. Reveal 1984-8-15 2842 Lassen Along highway 44, ca. 19 miles north of Susanville 1584 Comment
  UC747143  Artemisia arbuscula subsp. arbuscula G. Thomas Robbins 1945-10-18 2156 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  CHSC72215  Artemisia cana subsp. bolanderi Vernon H. Oswald; Lowell Ahart 1998-9-14 9622 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  SDSU6174  Artemisia cana subsp. bolanderi D. F. Howe 1966-8-25 4302 Lassen 41 miles south of Alturas on #395. 1676 Comment
  UC1119577  Artemisia cana subsp. bolanderi A. Simontacchi 1940-9-16 948 Lassen 1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS28717  Artemisia douglasiana George W. Gillett 1957-7-29 955 Lassen near Butte Lake Trail (above Snag Lake); Lassen Volcanic National Park 1859 Comment
Read comments
Aug 23 2012
  SD132272  Artemisia douglasiana G. Helmkamp 1990-9-23 E 15 Lassen 20 miles north of Litchfield along U. S. Hwy 395. 1435 Comment
  JEPS37007  Artemisia dracunculus W. L. Jepson 1918-8-3 7799 Lassen Honey Lake Valley 1219 Comment
  JEPS103170  Artemisia dracunculus Beth Corbin 2002-7-10 1089 Lassen Madeline Plains, ESE side. 5 air mi N of top of Observation Pk. 1627 Comment
  CAS-BOT-BC90766  Artemisia ludoviciana subsp. ludoviciana G. H. True 1937-7-10 783 Lassen Bull Flat (n. of Honey Lake) Comment
  SEINET7153235 Image available Artemisia ludoviciana subsp. ludoviciana G. Schoolcraft 1999-8-11 2878 Lassen East edge of Madeline Plains e. of Ravendale. 1628 Comment
  NY703664  Artemisia nova A. Tiehm 2003-9-11 14368 Lassen 2.9 road miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of the highway 1402 Comment
  CDA19747  Artemisia spinescens D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  UCD55270  Artemisia spinescens Ellen Dean 2006-5-15 3080 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1249 Comment
  CHSC23500  Artemisia tridentata Wayne O. Baum 1971-7-30 71 -55 Lassen S slope of Gallatin Peak. 2042 Comment
  CHSC42148  Artemisia tridentata C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi SE of Madeline and 9 mi NE of Termo. 2194 Comment
  UC1136978  Artemisia tridentata subsp. tridentata George A. Fisher and Irwin H. Johnson 1933-9-8 F 282 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1706 Comment
  SEINET230066  Artemisia tridentata subsp. vaseyana Leila M. Shultz, John S. Shultz 1985-6-23 8604 Lassen 41 miles north of Susanville on Highway 395 1433 Comment
  CHSC118473  Artemisia tridentata subsp. vaseyana Don Lepley 2016-9-17 Lassen Between Feather Lakes and Highway 44, approximately 5.3 air miles southeast of Bogard Rest Area; a little more than a third of a mile north of railroad crossing on Highway 44. 40N31:46.8 x 121W01:37.1 1743 Comment
  CHSC25906  Astragalus K. R. Stern 1967-7-1 2468 Lassen Roadside, Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  CHSC117759  Astragalus agrestis Virginia Dains; Joanne Crawford 2016-7-13 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km northwest of Termo, 4.7 km west of Highway 395, 150 meters south of agricultural fields. 1617 Comment
  NY790906  Astragalus agrestis G. Schoolcraft 1986-6-25 1642 Lassen About 3 miles northwest of Termo 1615.4 Comment
  CAS-BOT-BC177421  Astragalus andersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC177441  Astragalus andersonii M. S. Taylor 1982-5-29 4561 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  CHSC77208  Astragalus andersonii G. Schoolcraft 1996-5-13 2520 Lassen Fort Sage OHV area 3 miles ne of Doyle. 1402 Comment
  NY791373  Astragalus andersonii G. Schoolcraft 1982-6-22 725 Lassen North end of Ft. Sage Mountains 1585.0 Comment
  CAS-BOT-BC177434  Astragalus andersonii John Wynn Gillespie; Doris Kildale Gillespie 1930-5-14 9378 a Lassen 5 miles west of Susanville on Red Bluff road Comment
  CAS-BOT-BC27614  Astragalus anxius Robert J. Meinke; Kaye 1991-7-16 6108 Lassen Ash Valley, ca. 25 km W of Madeline, along Ash Valley Rd. 1550 Comment
  RSA614442  Astragalus anxius M. L. Carlson 1996-6-11 4202 Lassen 16 miles southeast of Adin on County Road 527 Comment
  SEINET8358141  Astragalus anxius Unknown 1991-7-16 6108 Lassen Ash Valley ca 25 km W of Madeline, along Ash Valley Rd. 1550 Comment
  RSA415412  Astragalus canadensis var. brevidens Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CHSC118474  Astragalus canadensis var. brevidens Don Lepley 2016-9-17 6 /28/2015 Lassen Eagle Lake Ranger District. Southwest corner of Eagle Lake, roughly a half-mile northeast of entrance of Christie Campground, near end of rough road past Eagle Lake Resort. UTM 683577 x 4493277 1559 Comment
  RSA111039  Astragalus curvicarpus R. C. Barneby 1949-6-11 11 Lassen Secret Valley, 18 miles S of R(illegible) Comment
  CHSC23432  Astragalus curvicarpus var. curvicarpus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5816 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CHSC60738  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-6-14 5519 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (RD. 518, 33N89). 1566 Comment
  CHSC7676  Astragalus curvicarpus var. curvicarpus Beverly J. Wise 1969-5-18 53 Lassen 7.7 mi. East of Susanville on the south side of Las. Co. Rd. 215. 1341 Comment
  CHSC106082  Astragalus filipes Lowell Ahart; John Dittes 2010-7-31 16976 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC48503  Astragalus filipes Vernon Oswald 1986-5-28 2062 Lassen Hwy 139 between Eagle Lake and Adin, 47.2 mi n of Susanville. 1706 Comment
  SEINET225940 Image available Astragalus filipes M. Lavin, K Lavin 1982-5-16 4069 Lassen 1.5 mi E of Halleujah Jct. (US 395), 22 air mi 325 degrees from Reno, W side of Peterson Mts 1676 Comment
  CAS-BOT-BC182957  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  RSA111097  Astragalus filipes H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-15 5459 Lassen Volcanic mesa E. of Viewland. 1311 Comment
  SEINET231384 Image available Astragalus filipes Margaret J. Williams 1983-7-31 83- 125 -1 Lassen Ash Valley Road, 17 mi from Aden 1829 Comment
  SEINET5325729  Astragalus filipes M. J. Williams 1983-7-31 83- 125 -1 Lassen Ash Valley road, 17 mi from Aden. 1829 Comment
  CAS-BOT-BC186858  Astragalus gibbsii Louella Bass 1973-6-3 96 Lassen Elysian Valley 1325 Comment
  NY674273  Astragalus gibbsii G. Schoolcraft 1982-7-20 806 Lassen Wagner Canyon, east of McKesick Peak 1524 Comment
  CAS-BOT-BC186868  Astragalus gibbsii E. K. Balls 1950-5-21 14825 Lassen Near Standish, Hwy 395, 7 mi. from junction of Hwys 36 and 395 1249 Comment
  RSA110068  Astragalus gibbsii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1944-5-29 5951 Lassen Constantia 1372 Comment
  CAS-BOT-BC186912  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC27652  Astragalus inversus Townsend Stith Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  POM23660  Astragalus iodanthus Jos. Burtt Davy s.n. Lassen Amadee Comment
  CHSC64785  Astragalus iodanthus var. diaphanoides Vernon H. Oswald 1995-5-24 6763 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. 1249 Comment
  OBI49332  Astragalus lentiginosus var. floribundus Lewis S. Rose 1940-6-16 40594 A Lassen Susanville 1280 Comment
  JEPS114628  Astragalus lentiginosus var. lentiginosus Lowell Ahart, John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber 1268 Comment
  CHSC64877  Astragalus lentiginosus var. salinus Vernon H. Oswald; Lowell Ahart 1995-6-19 6903 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Road., 8.5 mi e of Hwy. 395. 1444 Comment
  POM45581  Astragalus malacus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC13459  Astragalus obscurus M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CAS-BOT-BC192844  Astragalus pulsiferae A. A. Heller; P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  CAS-BOT-BC192855  Astragalus pulsiferae var. pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen East slope of Shaffer Mtn. Comment
  SEINET5324195  Astragalus pulsiferae var. pulsiferae A. A. Heller, P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  CHSC98310  Astragalus pulsiferae var. suksdorfii R. Ondricek-Fallscheer 1999-7-14 206 Lassen 6 1/2 air mi W of Crater Mtn. and 7 1/2 air mi ENE of Lassen Volcanic Natl. Park; 0.3 road mi S of Hwy 44 on USFS Rd. 32N60. 1706 Comment
  CHSC25301  Astragalus purshii Pauleen Broyles 1977-5-30 144 Lassen Spencer's Basin ca 8 km n of Herlong. 1770 Comment
  CHSC107091  Astragalus purshii var. purshii V. Lockie 2010-4-25 Lassen SW of Rice Canyon Road. In the middle of an old logging road. 1618 Comment
  CAS-BOT-BC192972  Astragalus purshii var. tinctus John Thomas Howell 1934-6-10 11862 Lassen Honey Lake Valley 37 miles s. of Susanville Comment
  JEPS94605  Astragalus purshii var. tinctus Vernon H. Oswald and Lowell Ahart 1997-5-27 8517 Lassen on Forest Route 38N04 2.6 mi ne Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat)); Williams Reservoir 1682 Comment
  UC1136766  Astragalus purshii var. tinctus George A. Fischer and Irwin H. Johnson 1933-7-14 F- 249 Lassen Lassen Forest 1767 Comment
  UC13456  Astragalus purshii var. tinctus L. T. Stephenson Sept., 1897 Lassen Chat Comment
  UC604677  Astragalus purshii var. tinctus Farris Farris 1935-5-20 Lassen three mi sw Susanville; sw of Susanville 1310 Comment
  JEPS94456  Astragalus whitneyi var. confusus Vernon Oswald and Lowell Ahart 1997-6-24 8634 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  SD109653  Astragalus whitneyi var. confusus James Vale, Keith Wagnon, Walter & Irja Knight 1981-5-24 4136 Lassen 3 mi S of Adin on Hwy #139 1372 Comment
  UC1561813  Astragalus whitneyi var. siskiyouensis Barbara Ertter with Gary Schoolcraft 1987-6-16 7183 Lassen open rhyolitic ridge w Hot Springs VABM (Skeedaddle Mountains on ne side of Honey Lake); Skeedaddle Mountains, ne side Honey Lake,l w of Hot Springs 2133 Comment
  RSA110171  Astragalus whitneyi var. siskiyouensis H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-14 5747 Lassen Hidden Valley E of Susanville. 1585 Comment
  CAS-BOT-BC198724  Astragalus whitneyi var. whitneyi G. Schoolcraft 1989-6-19 1915 Lassen Ash Valley RNA/ACEC 1554 Comment
  NY526733  Atriplex canescens R. F. Hoover 1940-10-5 4668 Lassen Wendel Comment
  CHSC110306  Atriplex confertifolia L. P. Janeway; B. Castro 2012-7-2 10924 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  UCR244040  Atriplex confertifolia Jim Andre 1993-6-1 19710 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC172657  Atriplex gardneri var. falcata Gary Schoolcraft 1983-6-20 1012 Lassen Mud Flat 1341 Comment
  UC1567451  Atriplex gardneri var. falcata G. Schoolcraft 1989-5-16 1877 Lassen Secret Valley w Hwy 395; Secret Valley 1347 Comment
  CHSC63701  Atriplex heterosperma Vernon H. Oswald 1994-9-6 6467 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. 1490 Comment
  CHSC63702  Atriplex rosea Vernon H. Oswald 1994-9-6 6468 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. Common in the parking lot and along the levee road on the N side of the creek. 1490 Comment
  CHSC65305  Atriplex rosea Vernon H. Oswald; Lowell Ahart 1995-8-14 7174 Lassen Modoc Plateau. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  RSA122664B  Avena sativa A. Simontacchi 1940-6-13 854 Lassen 3.4 miles W.S.W. of Patterson Mtn.; Halls Flat 1738 Comment
  CAS-BOT-BC106555  Balsamorhiza John Thomas Howell 1976-7-20 52011 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek - Sierra Nevada 1432 Comment
  CHSC71070  Balsamorhiza hirsuta Vernon H. Oswald; Lowell Ahart 1998-5-22 9089 Lassen Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail. 1417 Comment
  JEPS30490  Balsamorhiza hookeri Peter H. Raven and Otto T. Solbrig 1958-6-17 13292 Lassen o.4 mi s, along U.S. Highway 395 Ravendale Comment
  UC964788  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi west of Fredonyer Pass, Highway 36 Comment
  CHSC7644  Balsamorhiza sagittata Beverley J. Wise 1969-5-20 32 Lassen West city limits of Susanville on Hwy 36. 1341 Comment
  UC1776702  Barbarea orthoceras G. Schoolcraft 1998-5-20 2711 Lassen Willow Valley, Hwy 139 and Eagle Lake Road intersect 1493 Comment
  SEINET10970556  Barbarea orthoceras Katherine L. Morris 1973-5-25 Morris 244 Lassen Collected 13.7 mi nw of the jct of hwy 36 and 44 on hwy 44, in an area of yellow pine, fir, and ribes. Comment
  UC1191423  Bassia hyssopifolia Verne Grant and Irving Schneider 1947-9-6 8390 Lassen near Wendel (irrigation ditch w of Fleming Ranch Headquarters) Comment
  UCD97537  Bassia hyssopifolia E. K. Balls; P. C. Everett 1952-10-10 18137 Lassen 0.7 mi. e. of Standish, Hwy. 395, between Susanville and Alturas. 1249 Comment
  HSC9041  Beckmannia syzigachne Fred Kindel 1955-6-24 Lassen Mt.Meadows Reservoir Comment
  JEPS127216  Beckmannia syzigachne Lowell Ahart, John Dittes 2016-7-15 21216 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  POM172679  Beckmannia syzigachne Franklin P. Nutting 1894-7-6 s.n. Lassen Dixey Valley Comment
  SD52270  Beckmannia syzigachne F. Stephens 1894-8-11 11766 Lassen Comment
  SJSU9993  Beckmannia syzigachne C. L. Kline 1965-7-13 195 Lassen 1.8 mi E of Nubieber on Highway 299 2493 Comment
  UC37450  Beckmannia syzigachne J. Burtt Davy Jun 17 1897-Jun 24 1897 3315 Lassen Honey Lake Valley Comment
  UCD56782  Beckmannia syzigachne Leo Whitney 1934-8-6 2210 Lassen Honey Lake Valley. Bank of Susan River. 1371 Comment
  CHSC96767  Berteroa incana D. McDonald 2005-7-18 1307852 Lassen Modoc Plateau. Lassen County. Hallelujah Junction. Comment
  JEPS113921  Berteroa incana William Harnach 2006-5-31 1229 Lassen Approx 5.5 north of Hwy 70 on Scott Road (Anderson Ranch). Comment
  UC1191930  Berula erecta Malcolm A. Nobs, S. Galen Smith 1949-8-20 1487 a Lassen 1 mi s of Doyle (Long Creek); Long Creek Comment
  CDA38212  Berula erecta T. C. Fuller 1963-7-15 10891 Lassen South of road to Pittsville, 5.4 miles northwest of Little Valley. 0 Comment
  CAS-BOT-BC169400  Betula glandulosa John Thomas Howell 1934-7-9 12514 Lassen Bridge Creek Spring Comment
  HSC95198  Betula glandulosa Gordon Leppig, J. Cromwell 1997-7-26 599 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1135177  Betula glandulosa D. Dunning 1935-9-5 Lassen Bridge Creek Lassen National Forest, Eagle Lake Quadrangle Comment
  UC5376  Betula glandulosa M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  UC1542915  Bidens cernua G. Schoolcraft 1987-9-1 5380 Lassen 3.5 mi w of Madeline (along Ash Valley Road); Ash Valley Road 1639 Comment
  UC761894  Bidens cernua R. F. Hoover 1940-10-1 4661 Lassen near Honey Lake (between Janesville and Standish) Comment
  CAS-BOT-BC413084  Bistorta bistortoides George W. Gillett 1957-7-22 882 Lassen Lassen Volcanic National Park. Snag Lake. Campsite near south end of lake 1850 Comment
  HSC23511  Bistorta bistortoides B. Anthony 1967-7-14 290 Lassen 5.3 mi. from jct. of Hwy. 44 and rd. to Silver Lake 1799 Comment
  CAS-BOT-BC127954  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3733 Lassen 2 mi. S. of Ravendale 1463 Comment
  CAS-BOT-BC128014  Blepharipappus scaber Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee 1219 Comment
  CAS-BOT-BC128037  Blepharipappus scaber Doris Kildale Gillespie 1930-5-12 9340 Lassen 2 miles north of Susanville on road to Alturas Comment
  CAS-BOT-BC128040  Blepharipappus scaber Elmer I. Applegate 1934-5-4 8922 Lassen Sagebrush plains at south end of Secret Valley Comment
  CAS-BOT-BC128044  Blepharipappus scaber John Thomas Howell 1934-6-10 11894 Lassen Horse Lake Comment
  CDA19752  Blepharipappus scaber D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  POM204103  Blepharipappus scaber J. T. Howell 1934-6-10 11894 Lassen Horse Lake Comment
  SJSU4600  Blepharipappus scaber J. W. Tilden 1958-6-27 1287 Lassen Madeline Comment
  CAS-BOT-BC128031  Blepharipappus scaber Michael A. Vincent 1999-6-9 8578 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo Comment
  RSA152683  Blepharipappus scaber I. L. Wiggins, Dorothy Wiggins 1961-6-11 16355 Lassen Roadside east of Eagle Lake, 2 miles north of Susanville. Comment
  SEINET10912069  Blepharipappus scaber David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17767 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  UC1924569  Boechera Debra Valov 2006-5-30 2006041 Lassen Bieber off County Rd A2 c. 12 km east of Hwy 299 1285 Comment
  RSA0125912  Boechera Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1504460  Boechera pauciflora Reed C. Rollins and Kathryn W. Rollins 1981-5-31 81178 Lassen just n Eagle Lake Comment
  CHSC75475  Boechera puberula Vernon H. Oswald; Lowell Ahart 1999-6-9 9761 Lassen Bizz Johnson Trail just east of Devils Corral Trailhead located off of Hwy. 36 between Susanville and Fredonyer Summit. Adjacent to trail. 1420 Comment
  CAS-BOT-BC25510  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 miles west of Madeline. 1584 Comment
  CHSC68740  Boechera retrofracta Vernon H. Oswald; Lowell Ahart 1997-5-27 8495 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the north side of a creek paralleling the road. 1546 Comment
  SEINET12627116 Image available Boechera retrofracta Martin Schilling 2013-1 MS 257 Lassen Hat Creek overlook area, off Hwy 44, 2.86 air mi E of Sugarloaf Peak, 5 air mi NE of Hat Creek Hill, on W-facing slope, between rocks 1500 Comment
  UC1143032  Boechera retrofracta L. R. Short 1936-6-1 S- 354 Lassen Burgess Spring Experimental Range Lassen National Forest 1859 Comment
  CHSC29908  Boechera sparsiflora Robin Ondricek 1978-6-6 38 Lassen 1.3 mi N of Pine Creek Bridge on Co. Rd. 518. 1554 Comment
  RSA166295  Boisduvalia glabella Peter H. Raven, Otto T. Solbrig 1958-6-17 13289 Lassen U. S. Highway 395, 1.8 miles south of Ravendale. Comment
  RSA772655  Boisduvalia glabella Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47214 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  UC2046019  Bolboschoenus maritimus subsp. paludosus Nick Otting, Carex Working Group 2003-7-19 708 Lassen Modoc Plateau, Biscar Reservoir, 19 air miles northeast of Susanville. Comment
  SD197665  Brickellia microphylla G. K. Helmkamp 1990-9-23 B 15 Lassen Modoc Plateau: Susanville. 1189 Comment
  CHSC60929  Brodiaea coronaria subsp. coronaria Vernon H. Oswald; Lowell Ahart 1993-7-8 5676 Lassen N side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake. 1737 Comment
  UC1137774  Brodiaea coronaria subsp. coronaria August L. Hormay 1934-7-2 Lassen Black Mtn. Headquarters Lassen National Forest 1706 Comment
  UC1249280  Brodiaea coronaria subsp. coronaria Arthur Cronquist and Arthur H. Holmgren 1959-6-18 8485 Lassen 5 mi s Adin Comment
  UCD57490  Bromus briziformis R. M. Love 1944-7-10 s.n. Lassen South of Ravendale. Comment
  CAS-BOT-BC149580  Bromus carinatus var. carinatus William Bridge Cooke 1938-6-24 11062 Lassen Mount Shasta. MacBride Spring. 1524 Comment
  UC506924  Bromus carinatus var. carinatus George A. Fischer, Irwin H. Johnson 1933-7-14 F 251 Lassen Lassen National Forest 1767 Comment
  CHSC23516  Bromus carinatus var. marginatus Wayne O. Baum 1971-7-5 71 -13 Lassen E. slope of Gallatin Peak. 1981 Comment
  UCD59087  Bromus carinatus var. marginatus L. Whitney 1933-8-1 s.n. Lassen Harvey Mountain. Lassen Forest. 1828 Comment
  RSA715540  Bromus ciliatus var. ciliatus L. Ahart 2005-6-1 11865 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  CAS-BOT-BC155939  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CAS-BOT-BC155941  Bromus commutatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49519 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  JEPS96125  Bromus commutatus Vernon H. Oswald and Lowell Ahart 1996-6-17 7788 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36, trail at hwy 36 bridge spanning Susan River); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  RSA0065491  Bromus commutatus Marion P. Harthill 1974-6-14 s.n. Lassen Madeline. 1524 Comment
  CAS-BOT-BC155323  Bromus inermis John Thomas Howell; Gordon H. True 1973-8-1 50221 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2164 Comment
  HSC9183  Bromus inermis M. T. Milligan 1964-8-6 206 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CDA1827  Bromus japonicus A. A. Beetle 1941-6-28 2809 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 0 Comment
  CHSC115602  Bromus japonicus Lowell Ahart; John Dittes 2015-7-13 20310 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1024800  Bromus japonicus Leo Whitney 1935-6-23 3297 Lassen Lassen National Forest, Fruit Grower's Supply Company, Camp 10 Lassen National Fores; Lassen National Forest, Fruit Grower's Supply Company, Camp Comment
  UCD58874  Bromus japonicus Beecher Crampton 1954-7-6 2067 Lassen Along U. S. Hwy. 395. 15 miles south of Ravendale. 1676 Comment
  UC1037142  Bromus orcuttianus Leo Whitney 1935-6-25 3338 Lassen Ashurst Mountain Comment
  UC1024917  Bromus racemosus Leo Whitney 1935-6-28 3361 a Lassen Bieber Comment
  CAS-BOT-BC161575  Bromus suksdorfii John Thomas Howell; Gordon H. True 1973-8-1 50222 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2164 Comment
  UC1131324  Bromus suksdorfii A. Simontacchi 1940-6-24 891 Lassen 6.4 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1950 Comment
  CAS-BOT-BC161418  Bromus tectorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49520 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CHSC106583  Bromus tectorum Zachary Garcia 2008-4-8 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  JEPS107312  Bromus tectorum Lowell Ahart, John Dittes 2005-6-1 11909 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  NY664614  Bromus tectorum See comments 1935-6-15 Lassen Susanville 1310.6 Comment
  SEINET10515052  Bromus tectorum Paul Gallian, David B. Dunn 1971-6-2 Gallian 522 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC185001  Calamagrostis stricta subsp. inexpansa A. A. Beetle 1941-6-28 2805 Lassen 10 miles west of Chester. Comment
  CDA31616  Calamagrostis stricta subsp. inexpansa Gordon Leppig, Juli & Kai Neander 1997-7-25 685 Lassen Modoc National Forest, Blue Lake Ranch, peatland in large meadow complex. Comment
  HSC36104  Callitriche fassettii Ken Mahouski 1973-4-29 Lassen Along Hat Creek at Hat #2 power house forebay, near Cassel. Comment
  POM85831  Callitriche heterophylla var. bolanderi Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC17869  Callitriche verna M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixie Mts. Comment
  CAS-BOT-BC332740  Callitriche verna R. F. Thorne; Larry E. DeBuhr 1975-8-22 46986 Lassen Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line 1615 Comment
  CAS-BOT-BC80347  Calocedrus decurrens Ralph K. Gierisch 1968-7-12 3357 Lassen Lassen Forest, Hwy 36 1 mile east of Fredonyer Pass 1706 Comment
  CHSC6217  Calocedrus decurrens P. Balch 1955-7-18 Lassen Willow Creek, Eagle Lake. 1463 Comment
  RSA67251  Calocedrus decurrens Philip A. Munz 1951-9-15 16965 Lassen On dry flats, 6 mi west of Bieber. 1341 Comment
  SEINET10531060  Calocedrus decurrens Katherine L. Morris 1973-5-25 Morris 226 Lassen Collected in an area of sugar pine, Libocedrus, and yellow pine. 2.5 mi N of Jct 36 & Hwy 44. Comment
  HSC23523  Calochortus leichtlinii R. Carter 1967-6-27 552 Lassen 10 yds. off N side of rd., 1.75 mi. W of Eagle Lake Biology Station 1585 Comment
  UC423015  Calochortus leichtlinii Franklin P. Nutting Lassen Pine Creek Comment
  CAS-BOT-BC487963  Calochortus leichtlinii T. S. Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  CAS-BOT-BC487966  Calochortus leichtlinii R. Carter 1967-4-27 552 Lassen 1.75 mi w of Eagel Lake Biology Station 1584 Comment
  POM109563  Calochortus leichtlinii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  SEINET4169872  Calochortus leichtlinii A. A. Heller 1938-6-26 Lassen E. of Fredonyer Pass on State Hwy 36. 1219 Comment
  CAS-BOT-BC483439  Calochortus macrocarpus David D. Keck 1944-7-8 5452 Lassen 1.5 miles west of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  CHSC30571  Calyptridium umbellatum Sori H Shad 1970-6-25 32 Lassen Found E. 2 mile past Murrer's Meadow on N. side of road in rocky soil. 1524 Comment
  HSC12524  Calyptridium umbellatum Marcus E. Jones 1897-6-28 Lassen Diamond Mtn., Susanville, Perkin's Ranch 2226 Comment
  JEPS17206  Calyptridium umbellatum Frances D. Payne 1929-7-12 101 Lassen Lost Lake, Camp I Lost Lake; Warner Mountains, , Camp I 2286 Comment
  UCD39132  Calyptridium umbellatum Beecher Crampton 1964-6-25 7074 Lassen 25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  CDA39903  Calystegia occidentalis subsp. occidentalis T. C. Fuller 1965-6-3 13606 Lassen Chemically treated railroad right of way, Susanville. 0 Comment
  RSA0017409  Calystegia occidentalis subsp. occidentalis Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA339996  Calystegia polymorpha Noel Holmgren, Patricia K. Holmgren, A. H. Holmgren 1980-7-9 9581 Lassen Surprise Valley, 23.7 km (14.7 mi) south of Fort Bidwell. 1402 Comment
  SEINET10533674  Camassia leichtlinii subsp. suksdorfii Katherine L. Morris 1973-5-25 Morris 251 Lassen 27.7 mils nw of the jct. Of hwy. 36 And 44 on hwy. 44, At robber's spring, in An open meadow on one side of the hyw wirh yellow pine, white fir and open on The other side Comment
  OBI75874  Camassia quamash Anthony Baniaga 2011-6-7 312 Lassen Lassen Natl Forest. NW area of Grays Valley, just S of intersection of 33N11 and 32N 83Y. Poison Lake quad T32N R7E sec 11 SW of NE 1747 Comment
  CHSC30609  Camassia quamash subsp. quamash G. A. Brown 1975-6-30 10 Lassen Across from Coleman Lake. 1920 Comment
  UC2027336  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along Highway 395 ca. 6.6 m S of Karlo Road. quadrangle. Comment
  RSA294814  Camissonia boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  JEPS107788  Camissonia contorta Lowell Ahart, John Dittes 2005-6-2 11939 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  UC180090  Camissonia contorta Milo S. Baker 1890-1 Lassen Milford Comment
  HSC24653  Camissonia contorta John Pratt 1970-6-14 18 Lassen Comment
  HSC68913  Camissonia minor Gary Schoolcraft 1980-6-11 265 Lassen W of Wendel 1220 Comment
  CHSC93567  Camissonia parvula Lowell Ahart; John Dittes 2005-6-2 11938 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  CHSC93689  Camissonia parvula Lowell Ahart; John Dittes 2005-6-1 11852 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  JEPS107952  Camissonia pubens Lowell Ahart, John Dittes 2005-6-2 11993 Lassen Along a small wash, east side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  RSA113688  Camissonia tanacetifolia H. K. Sharsmith 1955-6-27 4511 -B Lassen Adjacent to State Highway 299 near Fall River Mills, Lassen National Forest 1220 Comment
  CAS-BOT-BC160835  Camissonia tanacetifolia subsp. quadriperforata John Thomas Howell 1934-6-10 11857 Lassen 3 miles n. of Omira Comment
  POM204165  Camissonia tanacetifolia subsp. tanacetifolia J. T. Howell 1934-7-8 12505 Lassen Spalding s, Eagle Lake. Comment
  CAS-BOT-BC160861  Camissonia tanacetifolia subsp. tanacetifolia Raymond Nelson 1962-8-25 s.n. Lassen Lassen Volcanic National Park. On the east shore of Snag Lake Comment
  CAS-BOT-BC160867  Camissonia tanacetifolia subsp. tanacetifolia Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16364 Lassen Roadside along California Highway 139, about 1 mile N of Grasshopper Valley Comment
  CAS-BOT-BC160872  Camissonia tanacetifolia subsp. tanacetifolia Loran C. Anderson; Kent Fish 1965-8-17 2951 Lassen Along hiway 44, in undisturbed sites of Hog Flat. 24 air miles northwest of Susanville 1676 Comment
  JEPS107837  Capsella bursa-pastoris Lowell Ahart, John Dittes 2005-6-2 11919 Lassen Near bunkhouse, Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC773929  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  CAS-BOT-BC37244  Cardamine breweri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49478 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC37252  Cardamine breweri Louella Bass 1980-5-22 s.n. Lassen Sierra Nevada. Bagley Springs along Susan River between Devil's Corral and Susanville. Comment
  CDA3662  Cardaria chalepensis T. C. Fuller 1964-10-7 12695 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 1 mile southwest of Nubieber. 0 Comment
  UC1137782  Carex August L. Hormay 1934-5-14 Lassen Gray's Flat Well Lassen National Forest 1706 Comment
  CHSC85988  Carex abrupta L. P. Janeway 2003-7-24 7918 Lassen High Cascade Range. Small meadow below Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.6 (air) km west of Clover Valley. 1920 Comment
  CHSC76790  Carex angustata L. P. Janeway 1999-9-5 6574 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  HSC97144  Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. Along end of meadow and marsh along Bridge Creek, 1.8 km. N of Hwy. 44, just NW of the Cinder Pit 1716 Comment
  UC1537643  Carex athrostachya Gordon H. True Jr. 1939-6-15 994 Lassen Bullard Lake, W of Grasshopper Valley Comment
  SD130377  Carex athrostachya John Thomas Howell 1973-7-10 49780 Lassen Sierra Nevada; open Jeffrey pine forest, Fredonyer Pass. 1737 Comment
  CAS-BOT-BC19067  Carex aurea John Thomas Howell 1976-7-19 51969 Lassen Sierra Nevada. On Gold Run Creek southwest of Susanville. 1386 Comment
  UC2031878  Carex bolanderi Nick Otting 2003-7-17 701 Lassen Cascade Mountains, Susan River,3.25 air miles west of Susanville. Comment
  HSC95168  Carex cusickii Gordon Leppig, J. Cromwell 1997-7-26 600 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET13351078  Carex davyi B. L. Wilson, P. Zika 2011-8-7 16805 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley 1740 Comment
  SEINET11309924 Image available Carex davyi D. E. Lepley 2012-1 1 Lassen On the South flank of Whaleback Mt., about 3.5 air miles NNW of Christie Campground at Eagle Lake and about 500 feet from FS21 (Road 32N02), on the Pikes Point 7.5' quad. UTM (NAD83, Garmin GPSmap 60CS): 0680730 x 4498190 at the northernmost, 0680750 x 4498124 at the southernmost. Comment
  CAS-BOT-BC20649  Carex douglasii John Thomas Howell 1974-7-10 50549 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CAS-BOT-BC20650  Carex douglasii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49192 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  UC1924590  Carex douglasii Debra Valov 2006-5-28 2006020 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  CAS-BOT-BC19776  Carex douglasii L. P. Janeway 1990-7-4 3766 Lassen Plumas National Forest. Milford Ranger District. East side of saddle, ca. 0.8 mile northeast of Meadowview Peak. 1981 Comment
  SEINET10823343  Carex douglasii Gordon H. True 1939-6-15 True 996 Lassen Bullard Lake west of Grasshopper Valley. Comment
  UCD140286  Carex douglasii James P. Smith; John Sawyer 1971-5-23 4664 Lassen along California 139, 1 mile south of junction with road to Thermo. Comment
  UC1133497  Carex filifolia var. erostrata A. Simontacchi 1940-5-28 789 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC34001  Carex filifolia var. filifolia Louella Bass 1973-4-13 EV 14 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CAS-BOT-BC34002  Carex filifolia var. filifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49194 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  HSC103600  Carex fracta Thomas W. Nelson, Jane Nelson 1985-8-10 8011 Lassen Along north side of Silver Lake 1829 Comment
  UC1609196  Carex heteroneura Vernon H. Oswald and Lowell Ahart 1993-8-3 5744 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  HSC48184  Carex hoodii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19242 Lassen 2 mi. N of Westwood Comment
  UC2031875  Carex hoodii Nick Otting and Bruce Newhouse 2003-7-15 705 Lassen Sierra Nevada Mountains, Diamond Mountain, 1000 feet east of summit, 7.5 air miles south-southwest of Susanville. Comment
  CHSC115041  Carex inops subsp. inops Stephanie Puentes 2011-7-7 09419 Lassen Big Foot THP. In the Big Valley Mountains, west of Big Valley. About 5 air miles SW of Lookout and 6 air miles NW of Bieber. 1447 Comment
  HSC103653  Carex lenticularis var. limnophila Thomas W. Nelson, Jane Nelson 1985-8-10 8010 Lassen Along north side of Silver Lake 1829 Comment
  CHSC65365  Carex limosa Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7217 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likeley. 1859 Comment
  HSC95192  Carex limosa Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 543 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC31697  Carex mariposana John Thomas Howell; Gordon H. True 1973-7-31 50045 Lassen On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  UC1136940  Carex microptera George A. Fischer, Irwin H. Johnson 1933-7-12 F 237 Lassen Patterson Flat Lassen Forest 1737 Comment
  CAS-BOT-BC31946  Carex microptera Clare B. Hardham 1971-8-22 18373 Lassen Streamside, Diamond Mt. 2346 Comment
  CAS-BOT-BC119737  Carex nebrascensis George Wilson Gillett 1957-7-22 881 Lassen South shore of Snag Lake, margin of gravel bars 100 yards from lake. 1850 Comment
  CHSC25910  Carex nebrascensis K. R. Stern 1967-6-25 2429 Lassen Road to Eagle Lake Biological Station, Dean's Meadow near Gallatin Peak, ca. 3 mi. S of Eagle Lake. 1676 Comment
  JEPS120112  Carex nebrascensis Lowell Ahart, John Dittes 2012-7-9 18298 Lassen About 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC61593  Carex pellita Arthur C. Barrett 1915-8-18 36 Lassen Plumas National Forest. Along stream near Laufman Sta. 1508 Comment
  CHSC66413  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-17 7809 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  JEPS88524  Carex pellita Vernon H. Oswald and Lowell Ahart 1996-6-24 7892 Lassen Papoose Meadows Modoc Plateau (located 0.5 mi e of Eagle Lake Rd. (A1) and 2.5 mi s of Eagle Lake, souternmost spring on e side of meadow) 1633 Comment
  CHSC98386  Carex petasata Dean Wm. Taylor 2007-6-14 20126 Lassen Stream channel sraining Lower Gooch Valley into Gordon Valley. 1828 Comment
  CHSC77250  Carex praegracilis G. Schoolcraft 1995-5-23 2487 Lassen Three Springs. 1554 Comment
  CHSC53538  Carex rossii L. P. Janeway; Gary Benson, Randy Harrison 1984-8-23 1057 B Lassen On southwest side of Blue Lake. 1889 Comment
  JEPS114623  Carex sheldonii Lowell Ahart, John Dittes 2008-6-22 15045 Lassen High dry bank of a levee, north of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.5 miles (air) northeast of Bieber 1267 Comment
  CHSC110302  Carex simulata L. P. Janeway; B. Castro 2012-7-2 10930 Lassen Modoc Plateau. East side of Skedaddle Mountains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch. 1600 Comment
  CHSC114404  Carex spectabilis Don Lepley 2014-6-24 Lassen Lassen National Forest, Eagle Lake Ranger District. About 1.8 air miles east of Diamond Mountain summitnand 0.3 mile west of end of Road 28N52A. 2225 Comment
  CAS-BOT-BC116606  Carex subfusca Clare B. Hardham 1969-8-28 17440 Lassen West of Janesville. Comment
  JEPS28384  Carex subfusca George W. Gillett 1957-7-26 911 Lassen lake shore near ne arm of Butte Lake; Lassen Volcanic National Park, Butte Lake 1844 Comment
  CAS-BOT-BC115284  Carex utriculata George Wilson Gillett 1957-7-22 885 Lassen South shore of Snag Lake, margin of gravel bars 100 yards from lake. Comment
  HSC95273  Carex vesicaria Gordon Leppig 1998-7-12 942 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC114879  Carex whitneyi Beecher Crampton 1964-6-26 7075 Lassen Ca 4 mi SSE Bogard Ranger Station, Lassen National Forest. Comment
  UCD123074  Castilleja Grady L. Webster 1989-5-13 7711 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CHSC106686  Castilleja angustifolia B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC116919  Castilleja angustifolia J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  CHSC14085  Castilleja angustifolia K R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5841 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  JEPS81474  Castilleja angustifolia M. S. Taylor 1982-5-29 4568 Lassen ca 0.5 mi n dirt road paralleling Hwy. 395 jct. with Scott Rd. (ca 20 mi n of Reno) Comment
  UC1012186  Castilleja angustifolia Francis W. Pennell 1940-6-9 25760 Lassen 5 mi s Ravendale (Route 395) 1645 Comment
  JEPS81611  Castilleja applegatei subsp. pinetorum M. S. Taylor and B. Hammond 1982-8-27 5052 Lassen ca 6 air mi sw Doyle; Constantia Quad., Diamond Mts., Crystal Peak Area 2377 Comment
  UC1063043  Castilleja applegatei subsp. pinetorum A. Simontacchi 1940-5-16 728 Lassen 2.3 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC506917  Castilleja applegatei subsp. pinetorum George A. Fischer, Irwin H. Johnson 1933-7-14 F- 259 Lassen Lassen Forest 1783 Comment
  CAS-BOT-BC243710  Castilleja applegatei var. pinetorum Clarence R. Quick 1961-6-21 61 -31 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CHSC65124  Castilleja arachnoidea Vernon H. Oswald; Lowell Ahart 1995-7-24 7134 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W od Upper Stephens Medws., just S of Pine Creek. 1950 Comment
  JEPS17631  Castilleja arachnoidea Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5409 Lassen 4.4 mi s Patterson Ranger Station (on e edge of Long Valley Meadow, s tip of the Warner Mountains); Warner Mountains, Long Valley Meadow 2057 Comment
  RSA523923  Castilleja arachnoidea Barbara J. Ertter 1988-7-25 7861 Lassen ridge of Diamond Mts, 1.5 miles E of Diamond Peak, 10 air miles due S of Susanville. 2287 Comment
  UC1563850  Castilleja arachnoidea Barbara Ertter 1988-7-25 7861 Lassen ca 1.5 mi e Diamond Peak (ca 10 air mi due s of Susanville, ridge of Diamond Mts); Diamond Mts. 2286 Comment
  JEPS87488  Castilleja campestris subsp. campestris Vernon H. Oswald and Lowell Ahart 1993-7-8 5644 Lassen near se end Poison Lake (0.4 mi n of Highway 44, Pittville Rd (Lassen 111,36N01), near its intersection with 33N11); near se end Poison Lake 1709 Comment
  UCD55272  Castilleja chromosa Ellen Dean 2006-5-15 3082 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1249 Comment
  SEINET10549100  Castilleja chromosa Paul Gallian 1971-6-2 Gallian 460 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, jeffry pine along high ridge in sandy wash. Comment
  CHSC66262  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1996-6-24 7842 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montana Meadow. 1633 Comment
  JEPS85915  Castilleja lemmonii L. R. Heckard with R. Bacigalupi 1980-6-12 5260 Lassen ne of Westwood (near golf course) 1554 Comment
  JEPS86676  Castilleja lemmonii L. R. Heckard with T. I. Chuang 1990-7-14 6756 Lassen just e Westwood (n of Firland Rd (Hwy 36)) Comment
  JEPS79327  Castilleja linariifolia T. C. Fuller 1980-8-5 20313 Lassen 7.4 km se Dodge Reservoir campground (along e side of Tuledad Road, on the e shore of Dodge Reservoir, ne of Ravendale) Comment
  UC485781  Castilleja miniata H. E. and S. T. Parks Jun 1928 250 Lassen Drakesbad; Lassen National Park Comment
  CAS-BOT-BC244887  Castilleja miniata Alice Eastwood 1912-8-22 1784 Lassen trail from Morgans Springs to Sulphur Works. Lassen Butte Region. Comment
  CAS-BOT-BC244896  Castilleja miniata Clare B. Hardham 1971-8-22 18382 Lassen Granitic slope west of Janesville Comment
  RSA0037005  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-19 14879 Lassen East bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  POM43075  Castilleja psittacina Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA505409  Castilleja psittacina R. C. Bacigalupi, S. Galen Smith 1957-6-28 6004 Lassen 5.9 miles south of Madeline. 1616 Comment
  CHSC64896  Castilleja tenuis Vernon Oswald 1995-6-26 6922 Lassen Modoc Plateau, Northern Juniper Woodland. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  UC199377  Castilleja tenuis Franklin P. Nutting 1894-7-21 Lassen near Eagle Lake Comment
  SEINET5339273  Ceanothus cuneatus W. Priest 1956-4-27 s.n. Lassen 20 mi south of Lassen Park turnoff, Ca. Hwy 36. 762 Comment
  CAS-BOT-BC52047  Ceanothus prostratus A. M. Vollmer; L. Beane 1953-7-1 88 Lassen Along Halls Flat Road, beinning 6 miles West of Susanville to McArthur 1554 Comment
  CHSC7727  Ceanothus prostratus Beverly J. Wise 1969-4-21 90 Lassen Approx. 2 mi. past Susanville old dump on old dump road. 1341 Comment
  RSA152665  Ceanothus prostratus I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16317 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  SEINET5339354  Ceanothus prostratus W. Priest 1956-4-27 s.n. Lassen 2 miles north of Susanville on US 395 1524 Comment
  CAS-BOT-BC277000  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E. side of Hwy 395 to Madelaine, 1.6 mi. n. of Termo Comment
  RSA157745  Centaurea maculosa T. C. Fuller 1962-8-28 9472 Lassen Roadside west side of Hwy. 395, 1.7 miles south of Doyle Comment
  CDA36156  Centaurea maculosa CDFA Staff Jul 1998 Lassen Susanville. 0 Comment
  CHSC71853  Centaurea squarrosa Vernon H. Oswald; Lowell Ahart 1998-9-8 9586 Lassen Kramer Rd. 3.1 mi south of Lookout. 1280 Comment
  JEPS30734  Centaurea virgata subsp. squarrosa E. E. Fix 1960-9-21 Lassen Bieber, vic. of Comment
  SEINET13331058 Image available Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 mi. N. of Bieber, Big Valley Comment
  UC35451  Centaurium exaltatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3392 Lassen Honey Lake Valley Comment
  CHSC29928  Cerastium fontanum subsp. vulgare Robin L. Ondricek 1978-6-16 77 Lassen In the meadow below the dam at Murrers Upper Meadow. 1548 Comment
  CAS-BOT-BC400184  Ceratophyllum demersum R. Carter 1967-7-13 593 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek 1560 Comment
  JEPS126504  Cercocarpus ledifolius var. intermontanus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-22 CA 350 -77 Lassen Take Horse Lake road and drive north of Horse Lake to the unnamed 6500 ft peak with a metal rod on top. Comment
  CHSC23520  Cercocarpus ledifolius var. ledifolius Wayne O. Baum 1971-6-28 71 -47 Lassen E. slope of Gallatin Peak. 2103 Comment
  JEPS96027  Chaenactis douglasii Vernon H. Oswald and Lowell Ahart 1996-6-17 7775 Lassen ca. 7 mi w Susanville (at bridge spanning river on n side of Hwy 36, and along the Bizz Johnson Trail, accessed at Devils Corral Trailhead off hwy); Modoc Plateau, Susan River 1432 Comment
  CHSC48134  Chaenactis douglasii var. douglasii Vernon Oswald 1986-6-15 2116 Lassen Hwy 139, 8.6 mi ne of Susanville. 1615 Comment
  CHSC93690  Chaenactis douglasii var. douglasii Lowell Ahart; John Dittes 2005-6-1 11893 Lassen On the east side of Scott Road, Long Valley, about 4 3/8 miles (air) north of the intersection of Scott Road and Highway 70, about 5.7 miles (air) northwest of Hallelujah Junction. 1460 Comment
  CAS-BOT-BC276622  Chaenactis douglasii var. douglasii Margaret Williams 1974-7-27 74 -L-52 Lassen Burned area near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 Comment
  SEINET7450277 Image available Chaenactis nevadensis D. W. Kyhos 1967-9-1 67 -87 Lassen Within 1/2 mile north of Hat Lake Comment
  UCD19699  Chaenactis nevadensis Donald W. Kyhos 1967-9-1 67 -87 Lassen Mount Lassen National Park, in the devastated area within 1/2 mile north of Hat Lake. Comment
  CHSC21172  Chamaebatiaria millefolium M. S. Taylor 1975-5-4 220 Lassen Ca. 1/4 mi e of Eagle Lake Field Station, ca. 13 mi ne of Susanville. Comment
  CHSC4857  Chamaebatiaria millefolium R. Carter 1967-7-13 588 Lassen On the rd to Eagle Lake, Biology Station and Willow Creek. 1584 Comment
  SBBG72342  Chamaebatiaria millefolium S. W. Hutchinson -Jun-1925 949 Lassen Eagle Lake 1554 Comment
  UC1523765  Chamaesaracha nana Gary Schoolcraft 1981-7-1 493 Lassen e slopes Roop Mountain 2133 Comment
  CHSC60898  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1993-7-8 5660 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Between the railroad and the lake. 1709 Comment
  JEPS128409  Chamerion angustifolium subsp. circumvagum Catherine Bauer with Ellen Bauer Benson 2017-8-16 17 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CAS-BOT-BC69434  Cheilanthes feei B. C. Cain 1923-8-24 90 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park. 1645 Comment
  CAS-BOT-BC473048  Chenopodium Gary Schoolcraft 1984-8-21 1362 Lassen S. slopes of Fredonyer Mtn 1950 Comment
  UC1745664  Chenopodium chenopodioides Annetta M. Carter 1945-9-30 1726 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  UC1594604 Image available Chenopodium nitens Vernon H. Oswald and Lowell Ahart 1992-7-16 5103 Lassen Long Lake S side of Hwy 44, between Old Station and Susanville, 1.2 mi SE of County Road A21 1745 Comment
  CAS-BOT-BC451357  Chimaphila menziesii Louella Bass 1978-6-15 78 -3 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC36276  Chrysolepis sempervirens Cain C. Brighton 1925-8-24 95 Lassen Mt. Lassen Volcanic National Park, 1 mi below Drakesbad 1645 Comment
  CHSC5249  Chrysolepis sempervirens P. Balch 1955-6-12 Lassen Eagle Lake. Forest between Eagle and Pittville Rd. Comment
  UC1137594  Chrysothamnus humilis George A. Fischer and Irwin H. Johnson 1933-9-8 F- 281 Lassen w end of Patterson Flat; Lassen Forest, Patterson Flat 1706 Comment
  SJSU3013  Chrysothamnus viscidiflorus J. W. Tilden 1967-8-23 1772 Lassen Litchfield, southeastern Lassen County 1402 Comment
  HSC103551  Chrysothamnus viscidiflorus subsp. viscidiflorus Thomas W. Nelson, Jane Nelson 1985-8-10 8030 Lassen Along north side of Silver Lake 1829 Comment
  CDA38210  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  CAS-BOT-BC184829  Cinna latifolia John Thomas Howell; Gordon H. True 1973-8-1 50246 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  UCD159568  Cirsium D. S. Park 2011-6-27 305 Lassen Near Antelope Mt. 1999 Comment
  UC773847  Cirsium andersonii L. R. Short and D. Gish 1936-7-15 S- 489 Lassen Burgess Spring Experiment Range 1825 Comment
  CAS-BOT-BC284384  Cirsium arvense John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49418 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  CDA1167  Cirsium cymosum T. C. Fuller 1959-7-7 2763 Lassen Hwy 395; 1 mile north of Ravendale. 0 Comment
  CDA15026  Cirsium cymosum B. Villegas 1998-8-18 s.n. Lassen Cascade Range; Hwy 299, 1 mi. W of Big Valley Summit (0.3 mi. W of milepost 7.5). Comment
  CAS-BOT-BC278001  Cirsium cymosum John Thomas Howell 1934-6-10 11908 Lassen Madeline Plains near Termo Comment
  UCD20369  Cirsium cymosum Joe DiTomaso 2002-6-5 s.n. Lassen about 3 miles northwest of the junction between Nevada, Modoc, and Lassen counties. Comment
  UC1776701  Cirsium cymosum var. cymosum G. Schoolcraft 1998-6-23 2738 Lassen Along Ramhorn Road 1.5 miles N of campground 1676 Comment
  CAS-BOT-BC278091  Cirsium douglasii var. breweri Peter H. Raven; Otto T. Solbrig 1958-6-17 13280 Lassen Along United States Highway 395, 13.1 miles south of Ravendale Comment
  SEINET2050011 Image available Cirsium occidentale var. candidissimum Noel H. Holmgren, John J. Fay & Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction). 1524 Comment
  SEINET3082769 Image available Cirsium occidentale var. candidissimum N. H. Holmgren, John J. Fay & Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction). 1524 Comment
  CDA1525  Cirsium ochrocentrum T. C. Fuller 1980-8-5 20311 Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground. Comment
  CAS-BOT-BC286304  Cirsium scariosum Alice Eastwood; John Thomas Howell 1940-6-11 7961 Lassen Eastern Fall River Valley Comment
  CDA37717  Cirsium undulatum Breckenridge/Mitchell 2007-7-11 s.n. Lassen Madeline Plains, along Westside Road, from historic Basque homestead. 0 Comment
  CHSC7631  Cirsium vulgare Beverley J. Wise 1968-8-23 16 Lassen 10 mi. N.W. of Susanville on the Las. Co. Rd. 201. 1798 Comment
  CAS-BOT-BC162636  Clarkia John Thomas Howell 1974-7-30 s.n. Lassen Diamond Mountain - Sierra Nevada 2286 Comment
  CHSC66393  Clarkia gracilis subsp. gracilis Vernon H. Oswald; Lowell Ahart 1996-6-17 7792 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Just SW of the parking area at Devils Corral Trailhead. 1420 Comment
  CHSC99129  Clarkia gracilis subsp. gracilis Lowell Ahart; John Dittes 2008-6-19 14887 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CAS-BOT-BC164864  Clarkia rhomboidea A. M. Vollmer; L. Beane 1953-7-1 35 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC164869  Clarkia rhomboidea Clare B. Hardham 1961-6-16 7447 Lassen S. of Susanville Comment
  CHSC59759  Clarkia rhomboidea Mary Meyer 1980-8-5 Lassen 2148 Comment
  UC1587045  Clarkia rhomboidea G. Schoolcraft 1991-7-30 2194 Lassen e side Widow Mountain 1889 Comment
  JEPS123454  Clarkia rhomboidea Wilson Collison, Jaileen Merced 2015-7-13 CA 320 -139 Lassen 2014 Bald Fire, West Beaver Creek. Comment
  RSA46419  Clarkia stellata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin s Ranch. 1829 Comment
  JEPS126532  Claytonia rubra subsp. rubra Lowell Ahart, John Dittes 2016-6-7 21012 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  CHSC5225  Cleome platycarpa J. B. Kimsey 1946-6-17 Lassen Eagle Lake. Horse Lake. 1554 Comment
  CHSC7714  Cleome platycarpa Beverly J. Wise 1969-5-3 4 Lassen 4.7 mi east of junction of Hwy 395 on las. Co. Rd. 338 (Smoke Creek Rd.) 1554 Comment
  NY222716  Cleome platycarpa G. H. True Jr. 1938-7-8 904 Lassen North of Hot Spring Mountain. 1371.6 Comment
  UC1567444  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi n Wendel Rd. (along Skedaddle Ranch Rd) 1463 Comment
  JEPS42688  Cleomella parviflora J. Burtt Davy Jun 17 1897-Jun 24 1897 3352 Lassen Amedee Honey Lake Vally Comment
  RSA294658  Cleomella parviflora A. Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just N of Hot Springs 1.1 air mile NNW of Wendel. 1232 Comment
  CAS-BOT-BC423226  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341 Comment
  UC1533121  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen about 1 mi w CA-NV stateline (along Smoke Creek Road) 1341 Comment
  SBBG66408  Collinsia childii E. Rockwell -Jun-1925 1023 Lassen Eagle Lake 1554 Comment
  CHSC68769  Collinsia parviflora Vernon H. Oswald; Lowell Ahart 1997-5-27 8500 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. 1546 Comment
  SEINET10315318 Image available Collinsia parviflora Jeffrey Huber 1971-6-2 127 Lassen Approximately 30 miles north of Susanville, on California Hwy 139 1646 Comment
  HSC68935  Collinsia parviflora Gary Schoolcraft 1979-5-1 15 Lassen Along road between Big Springs and Shearing Corrals 1677 Comment
  CHSC5903  Collinsia torreyi M. West 1946-6-24 Lassen Dow Butte Road. Eagle Lake. 1828 Comment
  HSC75886  Collinsia torreyi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19258 Lassen Harvey Valley near Cone Springs Comment
  SEINET13405554  Collinsia torreyi D. E. Brix 1962-5-2 s. n. Lassen Red Rock Road. 1433 Comment
  UC773850  Collinsia torreyi var. latifolia L. R. Short 1936-6-25 S 455 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1752 Comment
  CHSC25140  Collomia grandiflora R. Clicquennoi 1967-6-30 28 Lassen W central shore of Eagle Lake, 1/2 mi s of Pelican Point. 1554 Comment
  CHSC30572  Collomia grandiflora Sori H. Shad 1970-7-1 33 Lassen Found 3/4 mile past Murrer's. Meadow near edge of road. 1524 Comment
  UC1123657  Collomia grandiflora A. Simontacchi 1940-7-1 895 Lassen 5.4 mi nw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  SEINET12326975  Collomia grandiflora Unknown 1978-1 57 Lassen Lower Dry Lakes, E of Eagle L 1646 Comment
  CHSC5005  Collomia tinctoria K. C. Newman 1967-7-2 59 Lassen Collected about 50 yds. NE of ELBS just beyond the men's dorm. 1554 Comment
  JEPS28714  Collomia tinctoria George W. Gillett 1957-7-29 949 Lassen along trail between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  RSA122984  Collomia tinctoria L. R. Short, J. Warren 1936-6-10 s- 382 Lassen Burgess Spr. Exp. Range 1790 Comment
  UC1609177  Collomia tinctoria Vernon H. Oswald and Lowell Ahart 1993-6-28 5597 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  SEINET3225028 Image available Conanthus aretioides Marcus E. Jones 1897-6-28 Lassen Chat. 1520 Comment
  CDA3699  Conringia orientalis E. E. Fix 1961-6-1 Lassen E. Williams ranch, Termo. 0 Comment
  JEPS124900 Image available Convolvulus occidentalis subsp. occidentalis Ellen Locke 1967-7-12 101 Lassen Collected at overlook for Fall River Valley, Highway 299, about 6 miles east of Shasta-Lassen county line. Comment
  CHSC6277  Corallorhiza maculata A. Santos 1946-7-11 Lassen Silver Lake. 1981 Comment
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  JEPS95913  Cordylanthus maritimus subsp. canescens Lowell Ahart 1999-9-13 8218 Lassen about 150 yards southwest of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  CAS-BOT-BC212208  Cornus sericea John Thomas Howell; Gordon H. True 1973-7-31 50043 Lassen On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1783 Comment
  CHSC58493  Cornus sericea subsp. sericea Vernon H. Oswald 1992-7-3 5055 Lassen Lassen Volcanic Park. Grassy Creek between Horseshoe and Snag lakes, ca. 0.3 mi NE of the trail to Cameron Meadow. 1950 Comment
  SEINET10739210  Cornus sericea subsp. sericea Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 839 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  CHSC118478  Corydalis aurea Allison Sanger 2015-5-28 Lassen Lassen National Forest. Eagle Lake Ranger District. Outlet of Papoose Meadows, above rock weir blocking outlet. 1624 Comment
  CHSC21233  Crepis acuminata Robert A. Schlising 1974-6-25 3148 Lassen East side of Eagle Lake, just south of Eagle Lake Field Station. Near Bly Tunnel. Comment
  CHSC93564  Crepis acuminata Lowell Ahart; John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  JEPS107982  Crepis acuminata Lowell Ahart, John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  POM17703  Crepis acuminata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC581223  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1936-6-7 1763 Lassen ne slope of ridge near summit east of Red Rock 1818 Comment
  UC581294  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2346 Lassen about 4 mi se Willow Creek Range Station (se of Adin) 1767 Comment
  CAS-BOT-BC290393  Crepis acuminata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2313 Lassen Black Mountain about a mile below the summit 1940 Comment
  CHSC36849  Crepis bakeri M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno. Comment
  POM230908  Crepis intermedia G. Ledyard Stebbins, J. A. Jenkins 1937-7-10 2296 Lassen Crest of range head of Stony Ridge, west of Milford 1951 Comment
  UC581206  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2315 Lassen sw-facing slope about a mi below summit; Black Mountain 1940 Comment
  UC581208  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2216 Lassen just w ridge crest between Willow Creek Valley and Horse Lake 524 Comment
Read comments
Jul 18 2007
  UC773981  Crepis intermedia L. R. Short 1935-7-9 S- 509 B Lassen Burgess Spring Experiment Range 1818 Comment
  UC1136843  Crepis occidentalis L. R. Short and W. Gansberg S- 361 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1871 Comment
  UC581195  Crepis occidentalis E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1749 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  UC1776658  Crepis occidentalis G. Schoolcraft 1998-6-8 2731 Lassen Hills N. of Wendel 1402 Comment
  CAS-BOT-BC376489  Crepis occidentalis subsp. conjuncta G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2319 Lassen Black Mountain about a mile below the summit 1940 Comment
  UC581317  Crepis occidentalis subsp. costata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2218 Lassen 6 mi s Ravensdale 1676 Comment
  CAS-BOT-BC290821  Crepis occidentalis subsp. pumila G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-15 2362 A Lassen In Big Valley 2 miles west of Adin 1060 Comment
  CDA4443  Crepis occidentalis subsp. pumila E. E. Fix 1956-6-18 Lassen Termo. 0 Comment
  POM203850  Crepis occidentalis subsp. pumila J. T. Howell 1934-6-10 11872 Lassen Janesville Comment
  UC23225  Cressa truxillensis J. Burtt Davy Jun 17 1897-Jun 24 1897 3395 Lassen Honey Lake Valley, Amedee Comment
  SJSU10956  Croton setiger V. Hardham 1965-7-12 122 Lassen 12.4 mi NE of Susanville on Hwy 139 1493 Comment
  UC1537698  Cryptantha Gordon H. True Jr. 1938-7-9 909 Lassen near Termo 1524 Comment
  CHSC29917  Cryptantha affinis Robin L. Ondricek 1978-7-22 108 Lassen 1977 Burn area, 1.8 mi e of Coleman Rd. on Lassen Co. Road A1. 1950 Comment
  JEPS117574  Cryptantha ambigua Lowell Ahart, John Dittes 2010-7-31 17023 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  NY1112275  Cryptantha ambigua B. J. Ertter 1987-6-16 7199 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  RSA0059645  Cryptantha ambigua Richard R. Halse 2004-8-8 6616 Lassen Along State Highway 139 ca. 6 miles north of Eagle Lake. 1710 Comment
  SEINET10972821  Cryptantha ambigua Jeffrey Huber 1971-6-2 Huber 126 Lassen Approx. 30 mi N of Susanville, on CA Hwy 139, in basalt; Pinus-Artemesia-Juniper Assoc. 1646 Comment
  CHSC5035  Cryptantha circumscissa L. B. Barlow 1967-7-12 110 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC64765  Cryptantha circumscissa Vernon Oswald 1995-5-24 6785 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 18.5, ca. 1 mi e of Duck Lake Rd. 1219 Comment
  UCD55276  Cryptantha circumscissa Ellen Dean 2006-5-15 3091 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1245 Comment
  SJSU11363  Cryptantha glomeriflora J. W. Tilden 1960-6-27 1494 Lassen Westwood 1524 Comment
  SJSU5810  Cryptantha intermedia J. W. Tilden 1958-6-27 1294 Lassen Madeline Comment
  JEPS124572 Image available Cryptantha intermedia var. grandiflora S. Hardinghaus 1967-7-11 167715 -114 Lassen 6 mi. S. of Eagle Lake where meets Hw 139 at west shore, on Hwy 139. Comment
  CDA40508  Cryptantha muricata Gary Schoolcraft 2000-6-19 2903 Lassen West of Cold Spring Velley. Comment
  CHSC27926  Cryptantha torreyana M. S. Taylor 1974-7-9 267 Lassen Ca. 500 yds n of Eagle Lake Field Station, ca. 12 mi nw of Susanville. 1524 Comment
  JEPS107811  Cryptantha watsonii Lowell Ahart, John Dittes 2005-6-2 11949 Lassen Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction 1498 Comment
  RSA0008806  Cryptantha watsonii Barbara Ertter, Gary Schoolcraft 1987-6-16 7187 Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 Comment
  SEINET248370  Cusickiella douglasii Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8926 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 mi) northeast of Rye Patch Canyon summit, 21 km (13 mi) air distance east-southeast of Ravendale. 1700 Comment
  UC4436  Cypripedium californicum Mrs. R. M. Austin 1882-1 Lassen Mt. Dyer Comment
  POM121177  Cystopteris fragilis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  JEPS32210  Damasonium californicum Jos. Grinnell 1928-6-26 Lassen Poison Lake Lassen Peak Region, Poison Lake 1737 Comment
  UC1731161  Damasonium californicum Dean W. Taylor 1974-6-14 3714 Lassen on Hwy. 44 ca. 2 mi. w. from junction w/ Pittville Rd. Poison Lake; Modoc Plateau 1615 Comment
  UCD169624  Damasonium californicum R. F. Thorne; Larry E. DeBuhr 1975-8-22 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1615 Comment
  SEINET3828852  Damasonium californicum R. F. Thorne, Larry E. De Buhr 1975-1 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 iles south of Modoc county line. 1615 Comment
  UCD21047  Damasonium californicum E. Bortiri 2002-7-19 WFC 83 Lassen Bear Valley Reservoir, Rd 35N08 to Long Valley from Hwy 44, Lassen Co. Comment
  UC1024914  Danthonia californica Leo Whitney 1935-6-25 3368 Lassen near Camp 10 <of?> Fruit Grower's Supply Company; Lassen National Forest Comment
  CHSC66281  Danthonia californica var. americana Vernon H. Oswald; Lowell Ahart 1996-6-24 7839 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  UCD60868  Danthonia californica var. americana Mrs. Austin 1894-6-1 295 Lassen Lassen Creek. Comment
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Jul 11 2013
  UCD61007  Danthonia californica var. americana L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  UCD61291  Danthonia unispicata Beecher Crampton 1964-6-25 7069 Lassen 25 miles NW of Susanville, State Hwy. 44, Bogard Ranger Station, Lassen National Forest, meadow of Pine Creek Valley. 1722 Comment
  JEPS18992  Deinandra lobbii Rimo Bacigalupi with L. R. Heckard 1957-8-18 6060 Lassen 3.1 mi ne Bieber (along U.S. Highway No. 299, nw Lassen County); Big Valley 1249 Comment
  UC1523708  Deinandra lobbii Gary Schoolcraft 1981-8-25 567 Lassen e Little Valley (at edge of reservoir in flat); Chico Flat 1377 Comment
  CAS-BOT-BC1425  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along U.S. Highway #395 between Termo and Madeline Comment
  UC579715  Delphinium andersonii David D. Keck and J. Clausen 1935-6-24 3748 Lassen 2 mi s Ravendale 1464 Comment
  UCD39136  Delphinium andersonii Beecher Crampton 1964-6-27 7093 Lassen West of Termo. Madeline Plains. Comment
  NY353303  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass 1706.9 Comment
  HSC27070  Delphinium nudicaule John Pratt 1970-6-11 4 Lassen Fredonyer Pass 1738 Comment
  CHSC65115  Delphinium nuttallianum Vernon H. Oswald; Lowell Ahart 1995-7-24 7128 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. 1920 Comment
  CAS-BOT-BC116049  Delphinium nuttallianum M. M. Hanna 1956-6-3 910 -913 Lassen Grassy slope above Hiway 299. 87.3 mi. E. of Redding, Calif. Comment
  HSC27055  Delphinium nuttallianum John Pratt 1970-6-11 5 Lassen Fredonyer Pass 1738 Comment
  NY492431  Delphinium stachydeum G. Schoolcraft 1983-8-3 1123 Lassen About 2 miles south of Holbrook Canyon 1828.8 Comment
  POM114825  Deschampsia cespitosa subsp. cespitosa Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC192742  Deschampsia danthonioides Louella Bass 1973-5-29 EU 57 Lassen Elysian Valley 1325 Comment
  CHSC66282  Deschampsia danthonioides Vernon H. Oswald; Lowell Ahart 1996-6-24 7840 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. ON the W side of the meadow just S of the cabins. 1633 Comment
  SACT000919  Deschampsia danthonioides Malcolm Nobs, S. Smith 1949-7-21 Lassen Shallow marshy stream from springs, 4 miles north of Madeline. Comment
  UC1131558  Deschampsia danthonioides Robert W. Gardner 1937-6-20 G- 21 Lassen Burgess Spring Halls Flat Quad., Burgess Spring Comment
  UC1131560  Deschampsia danthonioides A. Simontacchi 1940-6-8 827 Lassen Halls Flat Ranger Station Lassen Nat'l Forest, Halls Flat Quad., Halls Flat Ranger Sta Comment
  UC188945  Deschampsia danthonioides Milo S. Baker 1900-7-5 Lassen Dixie Valley Comment
  CAS-BOT-BC201810  Deschampsia elongata Clare B. Hardham 1971-8-22 18377 Lassen Diamond Mountain 2133 Comment
  CAS-BOT-BC201814  Deschampsia elongata John Thomas Howell; Gordon H. True 1973-8-1 50181 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC201882  Deschampsia elongata George W. Gillett 1957-7-28 935 Lassen Banks of Widow Lake 2072 Comment
  UC1542918  Descurainia californica G. Schoolcraft and B. Ertter 1987-6-16 1747 Lassen Skedaddle Mtns. 1828 Comment
  POM203960  Descurainia incana subsp. incisa J. T. Howell 1934-7-7 12476 Lassen Harvey Valley. Comment
  CAS-BOT-BC43089  Descurainia nelsonii John Thomas Howell 1934-7-7 12476 Lassen Harvey Valley. Comment
  JEPS114360  Descurainia nelsonii Lowell Ahart, John Dittes 2008-6-19 14891 Lassen Bottom and sides of a small drainage, west bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  CHSC4784  Descurainia pinnata R. Carter 1967-7-7 578 Lassen Collected outside cafeteria, N side, 15 yds. from building. Eagle Lake Biology Station. Comment
  UC1126907  Descurainia pinnata A. Simontacchi 1940-6-4 808 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1783 Comment
  CAS-BOT-BC43165  Descurainia pinnata subsp. brachycarpa A. Simontacchi 1940-6-4 808 Lassen 14.8 miles west of Harvey Mountain Lookout. 1813 Comment
  CAS-BOT-BC43485  Descurainia sophia Al Simontacchi 1940-6-8 828 Lassen Lassen Forest. Halls Flat Ranger Station. 1706 Comment
  CAS-BOT-BC43486  Descurainia sophia James Jokerst 1983-5-31 1790 Lassen Near Madeline Plains. 1583 Comment
  POM109921  Dichelostemma multiflorum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin s Ranch. 1463 Comment
  UC3327  Dichelostemma multiflorum M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  CAS-BOT-BC500984  Dichelostemma multiflorum Ella Dales Cantelow 1940-5-31 3920 Lassen Hy. 299 E. of Mc Arthur Comment
  RSA598803  Dichelostemma multiflorum Christopher Davidson 1975-6-4 2630 Lassen Highway 299, ca 5 miles east of MaArthur. 1136 Comment
  CAS-BOT-BC299809  Dieteria canescens var. canescens G. Schoolcraft 1988-8-24 1858 Lassen 16 miles east of Adin 1645 Comment
  CHSC14068  Dieteria canescens var. canescens K . R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5817 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CAS-BOT-BC290960  Dieteria canescens var. shastensis James Jokerst 1983-7-24 1879 Lassen Near Madeline Plains 1614 Comment
  UC1119608  Dieteria canescens var. shastensis H. S. Yates 1936-8-11 6077 Lassen near Johnstonville; Susanville Quad. Comment
  CAS-BOT-BC290959  Dieteria canescens var. shastensis P. Monnet No date on label 789 Lassen Hot Springs Peak, S.E. of Lassen County 1828 Comment
  CHSC63378  Dimeresia howellii V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6353 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  CAS-BOT-BC153680  Diplacus mephiticus H. D. Ripley; R. C. Barneby 1944-5-22 5956 Lassen South of Janesville 1280 Comment
  SEINET8350435  Diplacus mephiticus A. A. Heller 1938-6-22 15188 Lassen one mile east of Westwood in the Arid Transition Life Zone. 1524 Comment
  CAS-BOT-BC151433  Diplacus nanus D. B. Dunn; B. J. Cox 1971-6-2 17798 Lassen 6 mi. N. of Hallelujah Jct. on U.S. Hwy 395 1402 Comment
  SACT001015  Distichlis spicata var. stricta Malcolm Nobs, S. Smith 1949-7-22 Lassen Both staminate and pistillate, forming a dense turf around high water mark, alkaline. Comment
  CAS-BOT-BC136177  Dodecatheon alpinum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  UC444833  Dodecatheon alpinum Franklin P. Nutting Lassen Pine Creek Northern California, Pine Creek Comment
  CHSC6281  Dodecatheon pulchellum B. Anthony 1967-7-14 277 Lassen One mi e of Silver Lake. 1950 Comment
  CHSC23459  Downingia K. R. Stern 1973-4-18 5853 Lassen Drying vernal pool area, ca. 0.2 mi n of Hwy 44 on Pittsville Rd. Comment
  JEPS117578  Downingia bacigalupii Lowell Ahart, John Dittes 2010-7-31 17013 Lassen Bottom of small wash, about 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  POM312397  Downingia bacigalupii Verne Grant, Irving Schneider 1947-7-31 8209 Lassen Irrigation ditch NE quarter of George Williams section 19, Madeline Plain. Comment
  UC1520667  Downingia bacigalupii Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9480 Lassen 5.6 mi w U.S. Highway 395 (10 air mi nw of Termo, Westside Road); Madeline Plains 1615 Comment
  UC1609311  Downingia bacigalupii Vernon H. Oswald and Lowell Ahart 1993-7-8 5677 Lassen ca 11 air mi nnw Poison Lake (n side of Rd 34N12, just e of the railroad at Halls Flat Well) 1737 Comment
  UCR163269  Downingia bacigalupii Jim Andre 1993-6-29 1408 B Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  CAS-BOT-BC492927  Downingia bacigalupii Louis K. Mann; M. Pat Mann 1963-6-18 s.n. Lassen On State Hwy 139 from Susanville to Adin, 42 mi N of Susanville. Comment
  CHSC27657  Downingia bicornuta N. E. Heiken 1978-7-27 92 Lassen N of Antelope Valley, w of Eagle Lake, pond in pasture. 1677 Comment
  JEPS14500  Downingia bicornuta var. bicornuta Joseph Grinnell 1928-6-26 Lassen Poison Lake 1737 Comment
  UC157670  Downingia bicornuta var. bicornuta Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UC803945  Downingia bicornuta var. bicornuta G. L. Stebbins Jr., P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 4005 Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  SEINET12329657  Downingia elegans N. H. Holmgren, Holmgren, P. K. 1978-1 8902 Lassen Madeline Plains, Coyote flat, 14.5 km (9 mi.) east-northeast of Termo and 13 km (8 mi.) airline 1630 Comment
  CHSC65303  Downingia insignis Vernon H. Oswald; Lowell Ahart 1995-8-14 7184 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  UCR163273  Downingia insignis Jim Andre 1993-6-29 1410 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  CAS-BOT-BC266474  Downingia laeta Gordon H. True 1936-6-21 518 Lassen Honey Lake Valley Comment
  UC1192038  Downingia laeta Malcolm A. Nobs and S. Galen Smith 1949-7-20 1047 Lassen Bieber, along Highway 299 Bieber Comment
  CAS-BOT-BC41370  Draba verna M. S. Taylor 1982-5-7 4428 Lassen Reno Junction on Highway 70 just east of Beckwourth Pass. 1524 Comment
  JEPS94484  Draba verna Vernon H. Oswald and Lowell Ahart 1997-5-27 8522 Lassen 3.6 mi ne of Highway 139 (small impoundment on Coyote Flat Draw crossing Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat); Coyote Flat Draw crossing Forest Route 38N04 1731 Comment
  UC1951080  Draba verna Debra Valov 2009-4-24 2009011 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CHSC91326  Draba verna var. aestivalis Lowell Ahart; John Dittes 2005-6-1 11901 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CHSC65308  Drosera anglica Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7216 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Lik ... Field redacted by CHSC, contact the data manager for more information 1859 Comment
  UC1143045  Drymocallis lactea L. R. Short and J. Warren 1936-6-10 S- 425 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1853 Comment
  UC1609244  Drymocallis lactea var. lactea Vernon H. Oswald and Lowell Ahart 1993-6-28 5613 Lassen ne Poison Lake (n of Hwy 44 on Rd 33N06, nne of Burgess Meadow, on the sse flank of Harvey Mtn); Harvey Mtn., ne of Poison Lake, nne of Burgess Meadow 1798 Comment
  HSC4391  Dysphania pumilio M. T. Milligan 1964-8-6 198 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC1561938  Eatonella nivea Barbara Ertter with Gary Schoolcraft 1987-6-16 7181 Lassen s-facing slope below ridge ca 1 mi w of Hots Springs VABM (on ne side of Honey Lake); Skeedaddle Moutnations, Honey Lake 1828 Comment
  CDA188  Echinochloa crus-galli O. W. Newman 1915-8-26 Lassen Susanville. Comment
  CHSC112989  Elatine Lowell Ahart; John Dittes 2013-7-23 18890 Lassen Around a man made pond, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA0105584  Elatine Lowell Ahart, John Dittes 2013-7-22 18883 Lassen About 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC116198  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20300 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS123971  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20301 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS123975  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20299 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC60975  Elatine chilensis Lowell Ahart 1993-5-17 6954 Lassen On the west side of Dunstone Road, about 1-1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. Comment
  RSA252456  Elatine gracilis R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39135 Lassen Said Valley Reservoir. Comment
  CHSC112770  Eleocharis acicularis Lowell Ahart; John Dittes 2013-7-22 18880 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS19338  Eleocharis acicularis Brown and Wieslander 1922-7-30 82 Lassen Martin Sprs. Eagle Lake Comment
  JEPS28330  Eleocharis acicularis George W. Gillett 1957-7-29 952 Lassen Snag Lake, shoreline near the E inlet Lassen Volcanic National Park 1850 Comment
  UC1836  Eleocharis acicularis J. Burtt Davy Jun 17-24 1897 3290 Lassen Honey Lake Valley Comment
  CHSC112798  Eleocharis macrostachya Lowell Ahart; John Dittes 2013-7-22 18848 Lassen West margin of a duck field, about 30 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS120126  Eleocharis macrostachya Lowell Ahart, John Dittes 2012-7-9 18293 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC117286  Eleocharis palustris Lowell Ahart; John Dittes 2016-7-15 21215 Lassen About 300b yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) mortheast of Bieber, Big Valley. 1261 Comment
  JEPS64130  Eleocharis palustris Brown and Wieslander 1922-7-30 76 Lassen Martin Springs, Eagle Lake Comment
  CAS-BOT-BC113202  Eleocharis parishii R. F. Thorne; C. W. Tilforth 1969-9-6 39258 Lassen Sandy flats along Long Valley Creek, ca. 14 mi SE of Milford. 1310 Comment
  UCD150399  Elodea canadensis William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  UC767490  Elymus X saundersii R. F. Hoover 1940-9-28 4631 Lassen Susanville Comment
  CAS-BOT-BC227490  Elymus elymoides Gary Schoolcraft 1983-6-29 1053 Lassen Ash Valley 1554 Comment
  RSA152628  Elymus elymoides I. L. Wiggins, Dorothy Wiggins 1961-6-11 16343 Lassen 13.5 mi. E. of Susanville Comment
  UCD61568  Elymus elymoides L. Whitney 1933-8-15 Lassen Halls Flat. Lassen Forest. 1737 Comment
  UC1024794  Elymus elymoides subsp. elymoides Leo Whitney 1933-7-15 2229 Lassen ca 25 mi w upper end of Eagle Lake; Lassen National Forest, Hall's Flat 1737 Comment
  UC1133050  Elymus elymoides subsp. elymoides A. Simontacchi 1940-6-13 858 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS126496  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-12 CA 350 -74 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the road towards the uphill to where the Rush fire burned. Comment
  JEPS126503  Elymus elymoides var. californicus Jocelyn Munoz 2016-8-17 CA 350 -80 Lassen Heading north on 139, turn right onto Horse Lake Road. Continue east on Horse Lake Road passed lake. Take a left on an unnamed road about 3.5 miles east of lake. Then turn right on the first unnamed road with a NW aspect. Comment
  UC7793970  Elymus glaucus L. R. Short and Wm. Gansberg 1936-7-3 S- 470 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 Comment
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Aug 1 2007
  UCD62368  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen On Gold Run Creek southwest of Susanville. 1386 Comment
  UCR7791  Elymus salinus Marilyn Malin 1968-7-10 260 Lassen Great Basin, south side of Hwy 395 at the Hurlong turnoff 1235 Comment
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Mar 9 2010
  JEPS68378  Elymus trachycaulus Brown and Wieslander 1922-7-23 74 Lassen Martin Springs Comment
  UC1037126  Elymus trachycaulus Leo Whitney 3261 b Lassen Fruit Grower's Supply Co. Camp 10 Lassen National Forest (dry creek) Comment
  UC188858  Elymus trachycaulus Milo S. Baker Lassen mts. s Dixie Valley Comment
  CHSC23330  Ephedra viridis Mark Stopher 1976-1-11 29 Lassen Ca. 52 miles south of Susanville on Hwy. 395 then two miles east on Red Rock Road. 1328 Comment
  UC119065  Ephedra viridis Mrs. R. M. Austin 1876-7-1 285 Lassen e of Susanville; Antelope Grade Comment
  UC1537115  Ephedra viridis Gordon H. True Jr. 555 Lassen n slope Hot Spring Mountain 1981 Comment
  UC281  Ephedra viridis J. Burtt Davy Jun 17 1897-Jun 24 1897 3342 Lassen Honey Lake Valley Honey Lake Valley (on slopes of lava hills) Comment
  UCD14623  Ephedra viridis Nathan Horn 1989-5-18 14 Lassen Great Basin, along Highway 70. 1487 Comment
  POM145990  Epilobium angustifolium subsp. circumvagum J. B. Feudge 1927-7-20 1716 Lassen West of Susanville Comment
  HSC16337  Epilobium brachycarpum M. T. Milligan 1964-8-23 237 Lassen Above Eagles Nest on main road, Eagle Lake 1829 Comment
  JEPS127267  Epilobium campestre Lowell Ahart, John Dittes 2016-7-13 21128 Lassen 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  RSA0105583  Epilobium campestre Lowell Ahart, John Dittes 2013-7-22 18850 Lassen About 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC764398  Epilobium campestre R. F. Hoover 1940-9-21 4602 Lassen 4 mi w Susanville Comment
  JEPS43851  Epilobium ciliatum subsp. ciliatum W. L. Jepson 1939-8-11 19378 Lassen Milford 1280 Comment
  JEPS121249  Epilobium densiflorum Lowell Ahart, John Dittes 2013-7-22 18878 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1567379  Epilobium densiflorum G. Schoolcraft 1989-7-18 1984 Lassen s Clark's Valley Rd. (near Box Spring) 1813 Comment
  CHSC30611  Epilobium hallianum G. A. Brown 1975-7-7 1 Lassen Gallatin Peak, western slope. 1990 Comment
  JEPS88515  Epilobium hallianum Vernon H. Oswald and Lowell Ahart 1996-6-24 7849 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow just s. of the cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1924229  Epilobium hallianum Debra Valov 2005-8-19 2005218 Lassen Eagle Lake; Hwy 139, Mi. marker 25 1554 Comment
  UC1587095  Epilobium minutum G. Schoolcraft 1991-7-30 2208 Lassen e slope Widow Mountain 1828 Comment
  POM260404  Epilobium minutum C. L. Hitchcock 1940-5-26 6609 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  JEPS87408  Epilobium oregonense Vernon H. Oswald and Lowell Ahart 1993-8-3 5741 Lassen just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  CHSC60912  Epilobium pallidum Vernon H. Oswald; Lowell Ahart 1993-7-8 5673 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the bed of a vernal pool on the E side of the road. 1694 Comment
  CHSC96704  Epilobium palustre Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 538 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CAS-BOT-BC56950  Equisetum arvense Louella Bass 1973-6-17 EU- 121 Lassen Elysian Valley 1325 Comment
  CHSC12451  Equisetum arvense Robert W. Severin 1969-6-26 41 Lassen 7.2 mi along road from E. L. B. S. to Galatin Beach, 3 mi s of E. L. B. S. 1645 Comment
  JEPS77524  Equisetum hyemale subsp. affine L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1978-7-20 4894 Lassen junction of Blue Lake turn-off with Likely-Patterson Guard Station rd.; Warner Mts. 1889 Comment
  CAS-BOT-BC57307  Equisetum laevigatum John Thomas Howell 1974-7-8 50473 Lassen Susanville 1295 Comment
  CHSC99499  Equisetum laevigatum Lowell Ahart; John Dittes 2008-6-20 14933 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC57236  Equisetum laevigatum Alice Eastwood; John Thomas Howell 1940-6-11 7996 Lassen Bieber Comment
  CHSC77263  Eragrostis cilianensis G. Schoolcraft 1997-8-20 2700 Lassen Safeway parking lot in Susanville. 1264 Comment
  CAS-BOT-BC174122  Eremogone aculeata Clare B. Hardham 1971-8-22 18426 Lassen Diamond Mountain 2346 Comment
  OBI76981  Eremogone congesta Anthony Baniaga 2011-6-23 390 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  RSA0045087  Eremogone congesta Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CAS-BOT-BC174189  Eremogone congesta var. congesta Mrs. R. M. Austin; Mrs. Bruce 1898-6-1 2156 Lassen [Madaline] Madeline Plains Comment
  CHSC89729  Eremogone congesta var. congesta L. P. Janeway 2004-6-26 8165 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CHSC89740  Eremogone congesta var. congesta L. P. Janeway 2004-6-26 8141 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  CHSC91525  Eremogone congesta var. congesta L. P. Janeway 2005-7-3 8457 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  CAS-BOT-BC174202  Eremogone congesta var. congesta D. B. Dunn; B. J. Cox 1971-6-2 17755 Lassen Approx. 12 mi. S. of Adin on Calif. Hwy. 139 1371 Comment
  CHSC68856  Eremogone congesta var. subcongesta Vernon Oswald; Lowell Ahart 1997-6-24 8632 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  RSA0057705  Eremogone congesta var. subcongesta L. P. Janeway 2001-6-20 7199 Lassen Modoc Plateau. Along 22 Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  CHSC91922  Eremogone congesta var. suffrutescens L. P. Janeway; B. Castro 2005-7-10 8476 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. 1859 Comment
  CAS-BOT-BC481938  Eremogone kingii var. glabrescens B. J. Hammerly 1941-6-21 51 Lassen 8 mi SE of Likely on Blue Lake Road Comment
  JEPS29748  Eremothera boothii subsp. alyssoides Rimo Bacigalupi and L. R. Heckard 1962-5-28 8502 A Lassen 2 mi e Wendel Junction (n of Honey Lake, on road from US 395 past Flanagan to Pyramid Lake NV) 1219 Comment
  UC20409  Eremothera boothii subsp. alyssoides Mrs. C. C. Bruce Jun 1898 2139 Lassen Shumway Comment
  CAS-BOT-BC160009  Eremothera boothii subsp. boothii Louella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  JEPS19760  Eriastrum signatum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6008 Lassen along US Hwy 395 ne Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon) 1615 Comment
  UCD54567  Eriastrum sparsiflorum Ellen Dean; Dawn Cunningham 2005-10-25 2750 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  UC133906  Eriastrum sparsiflorum Dr. Gustav Eisen July 1891 Lassen Honey Lake Comment
  UCD149881  Eriastrum wilcoxii William Anderson 1963-6-26 s.n. Lassen Honey Lake. Comment
  CAS-BOT-BC286601  Ericameria bloomeri Clarence R. Quick 1964-8-1 64 -94 Lassen Cal Mt. east of Poison Lake 1767 Comment
  CAS-BOT-BC286607  Ericameria bloomeri Gary Schoolcraft 1984-8-21 1367 Lassen Eastern slopes of Fredonyer Mtn. 33-12-35 2072 Comment
  CHSC349  Ericameria bloomeri 1944-7-31 Lassen Westwood. 1549 Comment
  POM40990  Ericameria bloomeri Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1136848  Ericameria bloomeri George A. Fischer and Irwin H. Johnson 1933-8-26 F- 280 Lassen n border Grass Valley; Lassen Forest, Grass Valley 1676 Comment
  UC1776699  Ericameria bloomeri G. Schoolcraft 1992-8-19 2249 Lassen About 1 mile east of Devil's Corral, HWY 36 1493 Comment
  CAS-BOT-BC298171  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  CAS-BOT-BC298177  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  OBI5746  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-5 2401 Lassen 3/4 mi E of Termo 1646 Comment
  UC527346  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 Lassen 3/4 mi e Termo 1645 Comment
  UC527348  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-6 Lassen 3 mi from Wendel (on the road to Janesville); Honey Lake Valley 1219 Comment
  UCD54535  Ericameria nauseosa var. oreophila Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2720 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1247 Comment
  CAS-BOT-BC294183  Ericameria nauseosa var. speciosa Clare B. Hardham 1969-8-28 17426 Lassen West of Janesville Comment
  CAS-BOT-BC294186  Ericameria nauseosa var. speciosa John Thomas Howell; Gordon H. True 1973-8-1 50216 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  CHSC66849  Ericameria nauseosa var. speciosa Vernon H. Oswald 1996-10-3 8295 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 10.4 mi N of Smoke Creek Ranch Rd. On the edge of highway at Secret Creek. 1402 Comment
  JEPS21495  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-27 4628 Lassen Susanville Comment
  UC1136975  Ericameria nauseosa var. speciosa L. R. Short 1936-9-30 S- 504 Lassen Burgess Spr. Exp. Range Lassen Forest 1755 Comment
  CAS-BOT-BC293011  Ericameria parryi var. nevadensis G. Schoolcraft 1992-8-19 2250 Lassen About 5 mi. west of Susanville, s. of river 1432 Comment
  UC1776655  Ericameria parryi var. nevadensis G. Schoolcraft 1998-8-19 2803 Lassen N upper slope of Shaffer Mountain 1981 Comment
  CDA18267  Erigeron G. D. Barbe 1974-8-2 1931 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  SEINET201631  Erigeron aphanactis A. Cronquist, AH Holmgren 1959-6-17 8466 Lassen 50 mi SE of Susanville 1372 Comment
  JEPS97423  Erigeron aphanactis var. aphanactis Vernon H. Oswald and L. Ahart 1995-6-19 6890 Lassen T30N R15E SE1/4 SE1/4 Sect. 12, 4440 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 3.6 mi e of Hwy. 395. Many-stemmed herbaceous perennial from a branching and tap-rooted caudex 1353 Comment
  CHSC27598  Erigeron bloomeri J. D. Prouty 1978-6-28 6 Lassen Lower Dry Lakes E of Eagle Lake. 1645 Comment
  CHSC29923  Erigeron bloomeri Robin Ondricek 1978-6-6 35 Lassen 1 mi S of Colley Point Overlook on Hwy 139. 1584 Comment
  JEPS94521  Erigeron bloomeri Vernon H. Oswald and Lowell Ahart 1997-5-27 8486 Lassen 38.2 mi n of Susanville (e side of Highway 139 at a small farm pond,, 7.4 mi n of Eagle Lake Road); Highway 139 1627 Comment
  CDA4405  Erigeron bloomeri T. C. Fuller 1963-6-1 10632 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  CAS-BOT-BC294483  Erigeron bloomeri var. bloomeri L. P. Janeway 1990-7-4 3768 Lassen On knob ca 0.8 mi NE of Meadowview Peak 1981 Comment
  CAS-BOT-BC294491  Erigeron bloomeri var. bloomeri Doris Kildale Gillespie 1930-5-13 9364 Lassen Between Susanville and Janesville Comment
  HSC82194  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6048 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  OBI76959  Erigeron bloomeri var. bloomeri Anthony Baniaga 2011-7-6 421 Lassen Lassen Natl Forest. Near intersection of 29N02Y and the "B" spur. Fredonyer Pass quad. T29N r10E sec 23 SW of SW 1640 Comment
  UC773917  Erigeron bloomeri var. bloomeri L. R. Short and J. Warren 1936-6-23 S- 451 Lassen Burgess Springs Experiment Range Lassen National Forest, Burgess Springs Experiment Range 1741 Comment
  CAS-BOT-BC294486  Erigeron bloomeri var. bloomeri Clarence R. Quick 1964-7-29 64 -90 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CHSC93675  Erigeron canadensis Lowell Ahart; John Dittes 2005-6-2 11974 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CHSC117510  Erigeron divergens Lowell Ahart; John Dittes 2016-7-13 21106 Lassen Sides of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 mile south of County Road A-2, 5.3 miles(air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  CHSC99112  Erigeron divergens Lowell Ahart; John Dittes 2008-6-20 14965 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS117585  Erigeron divergens Lowell Ahart, John Dittes 2010-7-31 17004 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  POM33001  Erigeron divergens Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC1583973  Erigeron divergens G. Schoolcraft 1990-7-11 2107 Lassen on e slopes Tule Mtn. 1767 Comment
  CAS-BOT-BC295976  Erigeron divergens Peter H. Raven 1963-5-29 18424 Lassen U.S. Highway 395 12.0 miles south of Ravendale Comment
  UC55075  Erigeron divergens Milo S. Baker 1898-7-12 306 Lassen The Bench Comment
  CHSC65088  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1995-7-24 7129 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi ESE of Silver Lake on Forest Route 10 just S of its jct. with Forest Road 30N21. At roadside. 1935 Comment
  UC1118206  Erigeron eatonii var. plantagineus A. Simontacchi 1940-6-4 801 Lassen 7.0 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle 1828 Comment
  UC1583978  Erigeron eatonii var. plantagineus G. Schoolcraft 1990-7-2 2098 Lassen Cold Spring Mtn.; lower slopes 1905 Comment
  UC1776680  Erigeron eatonii var. plantagineus G. Schoolcraft 1993-6-29 2313 Lassen Ash Valley RNA 16 miles E of Adin 1554 Comment
  UC87584  Erigeron eatonii var. plantagineus T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  JEPS95131  Erigeron elegantulus Vernon H. Oswald and Lowell Ahart 1997-5-27 8492 Lassen w side of Hwy 139 s of Willow Creek Guard Station 0.9 mi s of Forest Road 38N04 to Coyote Flat Coyote Flat; Hwy 139 1577 Comment
  UC1583975  Erigeron filifolius G. Schoolcraft 1990-7-2 2102 Lassen w Cold Spring Mtn. 1645 Comment
  JEPS117491  Erigeron filifolius var. filifolius Lowell Ahart, John Dittes 2010-7-31 17008 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  UCR244069  Erigeron filifolius var. filifolius Jim Andre, G. L. Clifton 1993-6-9 19695 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CAS-BOT-BC295182  Erigeron inornatus John Thomas Howell 1974-7-10 50561 Lassen Elysian Valley 1325 Comment
  JEPS100464  Erigeron inornatus var. inornatus Dean W. Taylor 2001-6-28 17820 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  CHSC112190  Erigeron linearis Dean Wm. Taylor 2012-6-7 21231 Lassen Modoc Plateau. Grasshopper Valley; Grasshopper Valley Road 2.3 miles E of junction with Highway 139. 1635 Comment
  UC585085  Erigeron linearis E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1792 Lassen about 5 mi N of Terno 1371 Comment
  RSA59554  Erigeron pumilus subsp. intermedius E. K. Balls 1950-5-22 14829 Lassen 1.5 mile SE of Milford, Hwy. 395, above Honey Lake 1280 Comment
  CHSC71222  Erigeron pumilus var. intermedius Vernon H. Oswald; Lowell Ahart 1998-6-4 9139 Lassen Red Rock Rd at its junction with Hwy. 395 south of Constantia. 1365 Comment
  CHSC72300  Erigeron pumilus var. intermedius L. P. Janeway; Glenn Clifton 1998-7-9 5727 Lassen Ridgetop saddle 1.0 mi east of Diamond Mtn. 2215 Comment
  HSC81807  Erigeron pumilus var. intermedius Thomas W. Nelson, Jane Nelson 1980-7-6 6029 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  UC1536739  Erigeron pumilus var. intermedius G. H. True Jr. 1936-6-27 558 Lassen near top of Hot Spring Mountain 1828 Comment
  UC31462  Erigeron pumilus var. intermedius M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  CAS-BOT-BC300117  Erigeron pumilus var. intermedius Gary Schoolcraft 1989-6-19 1916 Lassen Ash Valley RWA/ACEC Comment
  CAS-BOT-BC300121  Erigeron pumilus var. intermedius E. K. Balls 1950-5-22 14829 Lassen 1.5 mi. southeast of Milford, Hwy 395, above Honey Lake 1280 Comment
  UCD18963  Erigeron pumilus var. intermedius R. E. Francis 1965-7-7 8 Lassen Lassen National Forest, Harvey Valley Allotment. 1737 Comment
  NY243318  Eriogonum baileyi G. Schoolcraft 1985-7-29 1490 Lassen Western slopes of Ft. Sage Mtns. 1402.1 Comment
  SJSU13947  Eriogonum baileyi var. baileyi N. A. Hopkins 1986-8-28 1380 Lassen County Rd 33 (Scott Rd), lower Long Valley N of Hwy &0 & E of Beckwourth Pass Comment
  UC762657  Eriogonum baileyi var. baileyi R. F. Hoover 1940-10-5 4672 Lassen Pass between Shaffer Mt. and Warren Peak Comment
  CAS-BOT-BC241564  Eriogonum baileyi var. baileyi Gary Schoolcraft 1985-7-29 1490 Lassen Western slopes of Ft. Sage Mtns. 1402 Comment
  CAS-BOT-BC241569  Eriogonum baileyi var. baileyi E. K. Balls; P. C. Everett 1952-10-10 18139 Lassen 5.5 mi. n.e. of Litchfield, Hwy 395, between Susanville and Alturas 1280 Comment
  NY399607  Eriogonum baileyi var. baileyi E. K. Balls 1952-10-10 18139 Lassen 5.5 miles northeast of Litchfield, Highway 395, between Susanville and Alturas 1280.2 Comment
  UC762679  Eriogonum baileyi var. praebens R. F. Hoover 1940-10-5 4673 Lassen pass between Shaffer Mt. and Warren Peak Comment
  CAS-BOT-BC241831  Eriogonum caespitosum A. A. Heller 1938-6-23 15216 Lassen On U. S. Highway #395, south of Ravendale Comment
  CAS-BOT-BC241837  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N. LItchfield, 26.6 mi S Ravendale 1310 Comment
  CHSC14063  Eriogonum collinum K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5839 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  NY242502  Eriogonum collinum G. Schoolcraft 1983-6-28 1021 Lassen East side of Mud Flat. 31-15-26 1341.1 Comment
  NY242508  Eriogonum collinum H. D. D. Ripley 1943-6-15 5758 Lassen Near Viewland. 1310.6 Comment
  CAS-BOT-BC246510  Eriogonum elatum var. elatum John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50666 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CAS-BOT-BC255743  Eriogonum elatum var. villosum Clare B. Hardham 1969-8-28 17459 Lassen West of Janesville, Sierra Nevada Comment
  RSA0009584  Eriogonum maculatum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC584321  Eriogonum marifolium G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2289 Lassen s Jaynesville (e slope of Thompson Peak); Thompson Peak 2330 Comment
  RSA78919  Eriogonum microtheca var. ambiguum E. K. Balls, Percy C. Everett 1952-10-10 18143 Lassen 8 mi. SE of Ravendale, Hwy 395, Susanville to Alturas. 1280 Comment
  RSA703914  Eriogonum microtheca var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mile W of Plinco Mine Road (Lassen Co. road 331), 3.5 miles E of Hwy 395 at Doyle. 1662 Comment
  UC7867810  Eriogonum microthecum var. ambiguum R. F. Hoover 1940-9-28 4636 Lassen canyon n Leavitt Comment
  UCR67383  Eriogonum microthecum var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  CAS-BOT-BC268690  Eriogonum microthecum var. laxiflorum Clare B. Hardham 1971-8-22 18365 Lassen Diamond Mountain 2346 Comment
  NY282208  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 1982-9-8 912 Lassen In Robinson Canyon west of Doyle Ca. 1585.0 Comment
  SEINET530760  Eriogonum nudum var. deductum Paul Opler 2008-8-6 Lassen West of Milford, nr. Laufman Campground. Comment
  CHSC45484  Eriogonum nudum var. nudum Lowell Ahart; John Thomas Howell 1974-7-9 534 Lassen Along the edge of Eagle Lake Road, about 4 1/2 miles west of Susanville. 1584 Comment
  SEINET523088  Eriogonum nudum var. nudum Paul Opler 2002-6-22 Lassen Lauffman, W of Milfold. Comment
  UC412801  Eriogonum nudum var. pubiflorum Franklin P. Nutting Lassen Big Valley Comment
  CAS-BOT-BC269925  Eriogonum nudum var. pubiflorum Barrett Anderson 1986-7-9 3129 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  RSA0039349  Eriogonum nummulare John F. Emmel 1993-7-29 1284 Lassen Southeast Honey Lake Valley; 4.1 air miles west and 1.3 air miles south of Calneva railroad stop, ca. 2 air miles north of peak of Turtle Mountain. 1255 Comment
  POM105328  Eriogonum ochrocephalum var. ochrocephalum Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  SEINET524403  Eriogonum ochrocephalum var. ochrocephalum Paul A. Opler 2003-6-29 Lassen Quarry, 5 mi N of Hallelujah Junction, access road to west of US 295. Comment
  NY282047  Eriogonum ovalifolium var. nevadense G. Schoolcraft 1982-6-28 738 Lassen Ft. Sage Mtns. 762.0 Comment
  UC1032333  Eriogonum ovalifolium var. ovalifolium A. Simontacchi 1940-6-30 932 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC412810  Eriogonum ovalifolium var. ovalifolium Franklin P. Nutting Lassen Pine Creek Comment
  RSA0030656  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-9 439 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle. 1716 Comment
  UC1735877  Eriogonum prociduum Dean W. Taylor 1992-5-7 12543 Lassen Ash Valley, ca. 1.5 miles SW of Ash Valley cemetary Comment
  CAS-BOT-BC258146  Eriogonum prociduum var. prociduum E. K. Balls 1950-5-19 14780 Lassen 16.5 miles W. of Madeline on rd. from Adin 1676 Comment
  CHSC12948  Eriogonum prociduum var. prociduum K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5813 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  JEPS56326  Eriogonum spergulinum var. reddingianum Hilda Grinnell 1928-6-28 Lassen near Butte Lake 1889 Comment
  POM105812  Eriogonum spergulinum var. reddingianum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  POM165251  Eriogonum spergulinum var. reddingianum M. S. Baker 77 Lassen Pine Creek. Comment
  CHSC64846  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1995-6-26 6927 Lassen Ash Valley Rd. (Lassen 527), 8.5 mi w of Madeline, ca. 1 mi e of the reservoir at Fleming Sheep Camp. 1670 Comment
  CHSC71393  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1998-7-6 9246 Lassen Shugru Reservoir in Bass Hill WA on Hwy. 395 between Susanville and Janesville, 2.7 mi southeast of Hwy. 36. Roadside flat. 1243 Comment
  OBI77559  Eriogonum sphaerocephalum var. halimioides Anthony Baniaga 2011-7-1 409 Lassen CDFG. Bass Hill Wildlife Area W of hwy 395. Janesville quad. T29N R13E sec 19 SW of SW 1279 Comment
  RSA700235  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7200 Lassen Modoc Plateau. Along '22' Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  UC1483798  Eriogonum sphaerocephalum var. halimioides Teresa Prendusi 1980-7-14 Lassen along Ash Valley road about 15 mi w Madeline; Ash Valley 1524 Comment
  UC1924212  Eriogonum sphaerocephalum var. halimioides Debra Valov 2004-6-9 2004271 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  NY283149  Eriogonum sphaerocephalum var. sphaerocephalum N. H. Holmgren 1980-7-4 9499 Lassen Observation Peak, south side of mountain, 19 km. (11.5 miles) airline distance east-southeast of Ravendale 1830 Comment
  CAS-BOT-BC262743  Eriogonum strictum var. anserinum Ralph K. Gierisch 1968-7-11 3347 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CHSC13455  Eriogonum strictum var. anserinum J. Pitts 1972-6-22 248 Lassen 70 yds. n of Eagle Lake Biology Station. Comment
  CHSC6224  Eriogonum strictum var. anserinum A. Santos 1946-6-17 Lassen Mt. Fredonyer road. Eagle Lake. 2133 Comment
  CAS-BOT-BC267892  Eriogonum umbellatum Margaret M. Hanna 1956-6-3 s.n. Lassen Near Hiway 299, 62 mi. E. of Redding Comment
  CHSC66395  Eriogonum umbellatum var. modocense Vernon H. Oswald; Lowell Ahart 1996-6-17 7799 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  JEPS114751  Eriogonum umbellatum var. modocense Lowell Ahart, John Dittes 2008-6-19 14882 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  JEPS88218  Eriogonum umbellatum var. modocense Vernon H. Oswald and Lowell Ahart 1996-6-17 7799 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville 1420 Comment
  CAS-BOT-BC265101  Eriogonum umbellatum var. nevadense Frank W. Peirson 1926-6-24 6848 Lassen A few miles southward from the Madeline Plain Comment
  JEPS107821  Eriogonum umbellatum var. nevadense Lowell Ahart, John Dittes 2005-6-2 11980 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  NY399396  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Between Secret Valley and Ravendale. Upper Sonoran Life Zone 1524.0 Comment
  NY399398  Eriogonum umbellatum var. nevadense H. D. D. Ripley 1943-6-13 5713 Lassen South of Johnstonville 1325.9 Comment
  POM105088  Eriogonum umbellatum var. nevadense Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CAS-BOT-BC262200  Eriogonum ursinum Clarence R. Quick 1964-8-5 64 -98 Lassen Cal Mt. east of Poison Lake 1767 Comment
  CAS-BOT-BC262362  Eriogonum vimineum John Thomas Howell 1934-6-10 11850 Lassen 4 miles south of Omira Comment
  HSC63561  Eriogonum vimineum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC1601757  Eriogonum vimineum T. S. Brandegee 1892-6-26 Lassen Milford Comment
  JEPS56155  Eriogonum vimineum Alma U. Ames 1917-10-9 50 Lassen 25 mi n, on Hat Creek Road Mt. Lassen Comment
  POM111648  Eriophorum gracile Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CHSC5210  Eriophyllum lanatum W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  HSC23530  Eriophyllum lanatum Robyn Carter 1967-6-23 538 Lassen ca. 10 yds. off N side road; E side of Eagle Lake Murrers Meadow 1585 Comment
  RSA647564  Eriophyllum lanatum Marion P. Harthill 1971-6-20 205 Lassen Susanville Comment
  CAS-BOT-BC308138  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  UC566757  Eriophyllum lanatum var. achilleoides Loyd Swift 1928-6-12 Lassen Halls Flat Lassen National Forest, Halls Flat Comment
  OBI75879  Eriophyllum lanatum var. croceum Anthony Baniaga 2011-6-29 402 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 NE of SW 1500 Comment
  CAS-BOT-BC301390  Eriophyllum lanatum var. grandiflorum R. Carter 1967-6-23 538 Lassen Along rd to Murrer's Meadow 1584 Comment
  CAS-BOT-BC301528  Eriophyllum lanatum var. integrifolium Ralph K. Gierisch 1968-7-11 3355 Lassen Lassen National Forest. Highway 44 1737 Comment
  CAS-BOT-BC301532  Eriophyllum lanatum var. integrifolium 1927-7-1 50 Lassen Lassen National Forest. Bogard Ranger Station 1712 Comment
  UC1487306  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 550 Lassen U.C. Botanical Garden; ; alongside State Highway 395, 4.1 miles NNW of Termo, Madeline Plains Comment
  JEPS53558  Erysimum capitatum var. capitatum Frances D. Payne 1929-7-12 93 Lassen on ridge above Lost Lake; Warner Mts. 2286 Comment
  CHSC91306  Erythranthe floribunda Lowell Ahart; John Dittes 2005-6-2 11970 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CHSC99532  Erythranthe guttata Lowell Ahart; John Dittes 2008-6-20 14978 -A Lassen Edge of vernal pools, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET13768666 Image available Erythranthe guttata Francis W. Pennell 1940-1 25777 Lassen Route 36, 6 miles east of Westwood. 1585 Comment
  CHSC71395  Erythranthe inflatula Vernon H. Oswald; Beth Corbin, Gary Schoolcraft 1998-7-13 9263 Lassen Pittville Rd. (Lassen 111, FS 36N01) on the southeast edge of Poison Lake 1.9 mi N of Hwy. 44. On the bank of a pond on the east side of the railroad, which parallels the lake shore at this point. 1709 Comment
  CHSC43496  Erythranthe primuloides Lowell Ahart 1974-7-9 521 Lassen In a meadow along the south shore of Eagle Lake. 1584 Comment
  POM260456  Erythranthe pulsiferae C. L. Hitchcock 1940-5-26 6611 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  CAS-BOT-BC502813  Erythronium purpurascens Alice Eastwood 1912-8-22 s.n. Lassen Trail from Morgan Spring to Lassen Butte Comment
  SEINET10933162  Erythronium purpurascens Hall 1993-6-29 Hall 4294 Lassen Plants of Mount Lassen. Soupen Springs. 8000 feet. 2440 Comment
  NY500075  Eschscholzia W. W. Eggleston 1911-5-29 6752 Lassen Vicinity of Doyle Station 1290 Comment
  UC725540  Eschscholzia californica A. A. Heller 1941-6-26 16228 Lassen a short distance w county line near Adin (Modoc County) (along U.S. Hwy 299) Comment
  UCR67467  Eucephalus breweri George K. Helmkamp 1990-10-4 M- 6 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  UC1586591  Euclidium syriacum Vernon H. Oswald 1991-5-28 4616 Lassen 5 mi ne of Bieber (Wayman Barn at w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area 1264 Comment
  CDA3708  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin) Comment
  CHSC64874  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1995-6-19 6881 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  UC1533119  Euphorbia spathulata G. Schoolcraft 1986-6-18 1629 Lassen 3.5 mi e Hwy. 195 (on road to Hall Sp.) 1463 Comment
  UCD142354  Euphorbia virgata Fay Roberts 1938-8-21 s.n. Lassen Bieber. Comment
  JEPS31883  Eurybia integrifolia Brown and Wieslander 1922-7-30 14 Lassen Martin Springs Eagle Lake Comment
  CHSC71858  Euthamia occidentalis Vernon H. Oswald; Lowell Ahart 1998-9-8 9579 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). 1258 Comment
  RSA712794  Festuca L. P. Janeway 2005-7-3 8460 Lassen High Cascade Range. At junction of road 22 and road 35N40; 4.0 air km north-northwest of Blacks Ridge Lookout Tower. NAD83. 1523 Comment
  CAS-BOT-BC278431  Festuca idahoensis John Thomas Howell 1934-7-6 12448 Lassen Harvey Valley Comment
  CAS-BOT-BC278437  Festuca idahoensis John Thomas Howell 1934-7-6 12430 Lassen Hall's Flat Comment
  JEPS123453  Festuca idahoensis Wilson Collison, Jaileen Merced 2015-8-5 CA 320 -142 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  UCD37476  Festuca idahoensis Beecher Crampton 1960-6-18 5715 Lassen Southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  JEPS28299  Festuca rubra George W. Gillett 1957-7-29 947 Lassen between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  UCD66352  Festuca rubra L. Whitney 1935-6-27 Lassen Fruit Growers Supply Co. Comment
  JEPS19565  Floerkea proserpinacoides Milo S. Baker and F. P. Nutting 1894-6-15 Lassen Meadow in the Big Valley Mountains situated nw of Big Valley in which Bieber and Nubieber are located, northwestern Lassen County Big Valley; Big Valley Mountains Comment
  UC1130345  Floerkea proserpinacoides Robert W. Gardner 1937-6-14 G 4 Lassen Burgess Spring Experiment Range 1798 Comment
  JEPS120292  Frasera albicaulis var. modocensis Tim Kask 2013-5-29 211 Lassen On USFS Rd. 18 north of Highway 44 1/4 mi. Comment
  CAS-BOT-BC504438  Fritillaria atropurpurea John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50694 Lassen South and southeast of Diamond Mt., Sierra Nevada 2286 Comment
  CAS-BOT-BC508129  Fritillaria recurva Mrs. A S. Baldwin 1928-5-10 318 Lassen Coyote Flat. Over ridge from Dixie Valley Comment
  UCR67016  Gaillardia pulchella George K. Helmkamp 1990-9-23 G- 15 Lassen north of Ravendale 1677 Comment
  CHSC60766  Galium aparine Vernon H. Oswald; Lowell Ahart 1993-6-14 5548 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  HSC75888  Galium aparine D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19278 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UC1609119  Galium aparine Vernon H. Oswald and Lowell Ahart 1993-6-14 5548 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  RSA647556  Galium aparine Marion P. Harthill 1972-6-16 s.n. Lassen Doyle. Comment
  POM203777  Galium bolanderi J. T. Howell 1934-7-3 12381 Lassen Near Dry Lake. Mtns. SE of Bieber. Comment
  SEINET11615980  Galium boreale C. G. Gulling 1905-1 1542 Lassen Big Meadows Comment
  CHSC93556  Galium boreale subsp. septentrionale Lowell Ahart; John Dittes 2005-6-2 11981 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  POM69200  Galium mexicanum subsp. asperulum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CDA42206  Galium trifidum Gordon Leppig and T. LaBanca 1997-6-29 540 Lassen Blue Lake Ranch; Modoc National Forest. Comment
  HSC95185  Galium trifidum Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 523 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA0105575  Galium trifidum subsp. columbianum Lowell Ahart, John Dittes 2013-7-23 18895 Lassen Along the south margin of the levee road, about 150 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC36176  Gayophytum diffusum Jerry Snodgrass 1978-6-28 1 Lassen Lower Dry Lakes e of Eagle Lake. 1645 Comment
  UCD55278  Gayophytum diffusum Ellen Dean 2006-5-15 3093 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1245 Comment
  HSC87162  Gayophytum diffusum J. D. Prouty 1978-6-27 1 Lassen E of Eagle Lake, Black Mt. Rd., SE of Eagle Lake Field Station 1616 Comment
  CHSC29860  Gayophytum diffusum subsp. parviflorum Robin L. Ondricek 1978-6-26 70 Lassen .5 mi n of jct. with 5.16 on road to ELFS. 1572 Comment
  UC1186544  Gayophytum diffusum subsp. parviflorum J. W. MacSwain 1959-8-12 59 -148 Lassen 2 mi n Bridge Camp; Hat Creek Comment
  RSA0004469  Gayophytum helleri var. erosulatum W. L. Jepson 1918-8-2 7754 Lassen Beckwith Pass 1463 Comment
  RSA768780  Gayophytum heterozygum L. Ahart, John Dittes 2010-7-31 17025 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  CHSC27712  Gayophytum humile Robert A. Schlising 1978-7-1 3301 Lassen S of Eagle Lake; meadow bordering Mahogany Lake. 2060 Comment
  CHSC27711  Gayophytum racemosum George Deriso 1978-7-21 90 Lassen S of Eagle Lake, at E end of Mahogany Lake; near lake shore. 2060 Comment
  POM203958  Gayophytum racemosum J. T. Howell 1934-7-7 12473 Lassen Harvey Valley. Comment
  POM38132  Gayophytum racemosum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  NY999655  Gayophytum ramosissimum W. W. Eggleston 1910-9-3 6301 Lassen Vicinity of Doyle Station 1240 Comment
  UC1037192  Gentiana newberryi Leo Whitney 1934-7-20 1505 Lassen ca 14 mi w Eagle Lake (Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  JEPS28703  Gentianella amarella subsp. acuta George W. Gillett 1957-7-28 929 Lassen 1 mi above Butte Lake (on Widow Lake trail); Lassen Volcanic National Park 1905 Comment
  UC1037272  Geranium viscosissimum Leo Whitney 1934-7-10 1766 Lassen ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  JEPS47198  Geum triflorum Frances D. Payne 1929-7-12 87 Lassen on ridge above Lost Lake (Upper Silver Creek, northwestern Lassen County); Warner Mountains, Upper Silver Creek 2286 Comment
  JEPS94471  Geum triflorum Vernon H. Oswald and Lowell Ahart 1997-5-27 8504 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling the road); Forest Route 38N04 1546 Comment
  UCD39130  Geum triflorum Beecher Crampton 1964-6-25 7067 Lassen 25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  RSA122289  Geum triflorum var. ciliatum K. e. Bradshaw 1939-5-27 25210 Lassen Near S end of Black Mtn EF Plot 39-4. 1738 Comment
  UCD117610  Gilia brecciarum Grady L. Webster 1989-5-13 7707 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  SEINET14625061  Gilia brecciarum subsp. brecciarum M. J. Williams, A. Tiehm 1978-5-14 78- 48 -1 Lassen Hwy 395, 2.8 miles S of Red Rock road turn-off. 1372 Comment
  SEINET14626750  Gilia brecciarum subsp. brecciarum D. L. Neal 1960-5-7 R- 34 Lassen Red Rock area, ca 10 miles S of Doyle. 1463 Comment
  SEINET14644501  Gilia inconspicua F. L. H. 1915-5-28 s.n. Lassen Honey Lake. Comment
  SEINET14644567  Gilia inconspicua P. B. Kennedy 1901-6-10 s.n. Lassen Constantia, railroad station. Comment
  GMDRC7730  Gilia salticola J. M. Andre, G. Clifton 1993-6-1 33406 Lassen Modoc Plateau: along US Hwy 395, approx. 30 mi. NE of Susanville, north end of Secret Valley, SE end of Snowstorm Mtn, about 15 mi. SSE of Ravendale 1375 Comment
  RSA370318  Gilia salticola A. Tiehm 1986-5-12 10346 Lassen 14.4 road miles east of highway 395 on the dirt road to Smoke Creek and the Smoke Creek Desert. 1448 Comment
  JEPS114877  Gnaphalium palustre Lowell Ahart, John Dittes 2008-6-22 15032 Lassen About 120 yards west of the road levee, on the banks of a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  JEPS117581  Gnaphalium palustre Lowell Ahart, John Dittes 2010-7-31 16995 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  SEINET8770761 Image available Gnaphalium palustre B. L. Wilson, D. Lytjen, N. Otting 2005-7-25 11474 Lassen Snowstorm Creek, upstream of Biscar Reservoir 1372 Comment
  UC1483835  Gnaphalium palustre G. Schoolcraft 1980-7-22 Lassen nw of BLM fire station (along Hwy 395) 1630 Comment
  UC26770  Gratiola ebracteata M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake; near Eagle Lake 1524 Comment
  CHSC117760  Gratiola heterosepala Virginia Dains; Joanne Crawford 2016-6-9 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km southeast of Horse Lake, 23 km northwest of Shaffer Mtn. 1470 Comment
  CHSC36464  Grayia spinosa Jeffrey R. Peek 1982-6-1 25 Lassen Ca. 10 yds e of Ravendale Rd, e of Horse Lake. Comment
  CHSC5231  Grayia spinosa V. Holt 1944-6-28 Lassen S slope of Rocky Point, w side of Eagle Lake. 1627 Comment
  CAS-BOT-BC314597  Grindelia hirsutula John Thomas Howell 1976-7-19 51955 Lassen Southwest of Susanville on Gold Run Road, Sierra Nevada 1341 Comment
  JEPS124631 Image available Grindelia nana Virginia Hardham 1965-7-13 132 Lassen Along roadside 1.4 mi past junction of As and 299. Comment
  CAS-BOT-BC304679  Grindelia squarrosa M. S. Taylor 1982-8-19 5024 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. 1493 Comment
  CHSC60757  Gymnosteris parvula Vernon H. Oswald; Lowell Ahart 1993-6-3 5485 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. In a meadow. 1731 Comment
  UC1220391  Gypsophila paniculata var. paniculata T. C. Fuller 1963-7-16 11013 Lassen Janesville; hillslope n of cemetary Comment
  JEPS103223  Hackelia amethystina G. Schoolcraft 1981-6-12 455 Lassen Gold Run Rd. on lower slopes of Diamond Mtn. 1889 Comment
  UC1587098  Hackelia californica G. Schoolcraft 1991-7-30 2197 Lassen e slope of Widow Mountain 1859 Comment
  CAS-BOT-BC231156  Hackelia cusickii Mrs. A S. Baldwin 1928-5-1 s.n. Lassen Coyote Flat, over ridge from Dixie Village Comment
  CAS-BOT-BC314766  Helianthella californica var. nevadensis John Thomas Howell 1934-7-11 12561 Lassen Near Black's Lake Comment
  UC1192217  Helianthus annuus Verne Grant and Irving Schneider 1947-7-31 8215 Lassen irrigation ditch ne quarter George Williams section 19; Madeline Plain Comment
  JEPS124644 Image available Helianthus annuus M. R. Kempf 1965-7-12 284 Lassen [...] miles south of Milburn on Hwy 395- Sierra Valley. Comment
  CHSC71860  Helianthus bolanderi Vernon H. Oswald; Lowell Ahart 1998-9-8 9572 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. Roadside. 1255 Comment
  SD64346  Helianthus nuttallii Darley F. Howe 1966-8-26 4303 Lassen Modoc-Lassen County Line, east of Warner Mountains. 1340 Comment
  CHSC13635  Heliotropium curassavicum M. S. Taylor 1974-6-25 269 Lassen On w shore of Pelican Pt, on e shore of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  RSA783699  Heliotropium curassavicum R. R. Halse 2010-8-25 8086 Lassen Along State Hwy 139 ca. 26.2 mi N of Susanville on NE shore of Eagle Lake. 1559 Comment
  CAS-BOT-BC314967  Hemizonella minima John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49201 Lassen Elysian Valley northwest of Janesville, Sierra Nevada 1325 Comment
  JEPS107809  Hemizonella minima Lowell Ahart, John Dittes 2005-6-2 11940 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  SJSU8133  Hemizonella minima J. W. Tilden 1960-6-27 1500 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  UC1069087  Hesperochiron californicus A. Simontacchi 1940-5-17 740 Lassen 5.9 mi. s. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  CAS-BOT-BC180030  Hesperochiron pumilus E. K. Balls 1950-5-19 14770 Lassen Ash Creek Public Camp, off rd. from Adin to Madeline. Comment
  UC1924195  Hesperolinon micranthum Debra Valov 2005-8-20 2005235 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  POM87379  Hesperolinon micranthum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SEINET10936270  Hesperolinon micranthum Mary Susan Taylor 1974-1 Taylor 272 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC280680  Hesperostipa comata John Thomas Howell 1934-6-10 11841 Lassen Near Plumas Junction Comment
  UCD32669  Hesperostipa comata Beecher Crampton 1954-7-6 2071 Lassen Lassen County, 17 miles south of Ravendale, along US highway 395. 1524 Comment
  UCD85293  Hesperostipa comata Beecher Crampton 1954-7-6 2068 Lassen an artemisia flat, along US Hwy. 395, 1 mile east of Johnstonville. Comment
  JEPS96087  Heterocodon rariflorum Vernon H. Oswald and Lowell Ahart 1996-6-24 7859 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd, w side Papoose Meadows, ca 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1562324  Heterotheca villosa var. minor Vernon Oswald and Lowell Ahart 1990-7-25 4397 Lassen 2.2 mi w Hwy 395 (intersection of Hwy 70 and Scott Rd) 1463 Comment
  RSA0063206  Heuchera rubescens var. alpicola Barbara Ertter, Gary Schoolcraft 1987-6-16 7201 Lassen Skeedaddle Mtns on NE side of Honey Lake. Between Hot Springs Peak and VABM. 2256 Comment
  CHSC5212  Hieracium albiflorum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  CAS-BOT-BC312415  Hieracium albiflorum Alice Eastwood 1912-8-22 1781 Lassen Trail from Morgans Springs to Sulphur Works, Lassen Butte Region Comment
  CAS-BOT-BC318714  Hieracium horridum Wm. Bridge Cooke 1938-8-18 11492 Lassen Horse Camp slopes, Mount Shasta 2514 Comment
  SEINET11262512  Hieracium nudicaule Robert L. Johnson, Mikel R. Stevens 2015-7-10 3938 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1564 Comment
  JEPS103187  Hieracium scouleri G. Schoolcraft 2000-7-5 2911 Lassen On slopes of Shinn Mountain 2011 Comment
  UC92036  Hieracium scouleri unknown 1892-6-28 Lassen Janesville Comment
  CHSC75503  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1999-6-9 9737 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395, springy marsh surrounded by sagebrush scrub. 1353 Comment
  UC1191967  Hippuris vulgaris Malcolm A. Nobs and S. Galen Smith 1949-8-20 1471 a Lassen 1 mi. s. Milford (Honey Lake Valley); Honey Lake Valley Comment
  SEINET10685375  Holodiscus microphyllus var. glabrescens Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 150 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CHSC80544  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald 2001-5-4 9997 Lassen Ash Creek Wildlife Area, Wayman Barn at the west end of Hunt Rd. 1267 Comment
  UCD85277  Hordeum brachyantherum A. A. Beetle 1941-6-28 2800 Lassen 10 miles W of Chester. 1524 Comment
  SEINET10663525  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9751 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  POM112122  Hordeum brachyantherum subsp. californicum Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CHSC5255  Hordeum jubatum 1944-7-11 Lassen Eagle Lake. 1615 Comment
  UCD85684  Hordeum jubatum subsp. intermedium A. A. Beetle 1941-6-28 2808 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CAS-BOT-BC289573  Hordeum marinum subsp. gussoneanum John Thomas Howell 1974-7-10 50533 A Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CHSC60848  Horkelia fusca subsp. tenella Vernon H. Oswald; Lowell Ahart 1993-6-28 5577 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  HSC26604  Horkelia tridentata var. flavescens D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19221 Lassen 3 mi. N of Westwood Comment
  CAS-BOT-BC537887  Horkelia tridentata var. flavescens G. S. Crew 1927-6-25 24 Lassen Lassen Forest, Norval Flat 1747 Comment
  CAS-BOT-BC55478  Hornungia procumbens Arnold Tiehm 1980-5-29 5749 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north northwest of Wendel. 1231 Comment
  OBI48149  Hydrophyllum capitatum var. alpinum Rhonda Riggins 1989-4-27 1647 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  RSA122624  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen MDM, Burgess Spr. Exp. Range. 1753 Comment
  POM73939  Hydrophyllum occidentale Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  SEINET10472162  Hypericum formosum subsp. scouleri Mary Susan Taylor 1974-1 Taylor 283 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC401308  Hypericum scouleri Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  JEPS128411  Iliamna bakeri Jennifer Mueller 2017-8-15 CA 370 -263 Lassen Below Tuledad Valley Ranch take the access road into the Cottonwood Mountains towards the Dodge Fire. Comment
  SDSU7494  Iliamna bakeri D. F. Howe 1964-8-2 3924 Lassen Hillside above Parsnip Creek, Warner Mts., Modoc National Forest 1829 Comment
  HSC63937  Ipomopsis aggregata Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak. alongside rd. to lookout 2317 Comment
  CHSC64801  Ipomopsis polycladon Vernon H. Oswald 1995-5-24 6769 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  JEPS118488  Iris hartwegii subsp. hartwegii Lowell Ahart, John Dittes 2011-6-21 17524 -A Lassen 335 feet northwest of Big Valley Canal, 2.1 miles (air) south of County Road 87, 6.6 miles (air) northeast of Bieber, 7.9 miles (air) west by southwest of Adin, Big Valley 1264 Comment
  CAS-BOT-BC61865  Isoetes nuttallii John Thomas Howell 1974-7-10 50537 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC324779  Iva axillaris M. S. Taylor 1982-8-19 5022 Lassen E side of Highway 395 ca. 4 miles north of its junction with Highway 70 at Hallalujah Junction 1493 Comment
  HSC42417  Iva axillaris Barbara Kelly 1977-8-9 577 Lassen At a large mining tailing a few mi. N of Termo (7.9 mi. S of Madeline) at Rod and Gun Club Road. Comment
  SD64329  Iva axillaris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on Highway 395. 1675 Comment
  JEPS41099  Iva axillaris subsp. robustior W. L. Jepson 1918-8-2 7787 Lassen Long Valley 1371 Comment
  NY833698  Ivesia baileyi G. Schoolcraft 1983-6-28 1032 Lassen No. 2 canyon of Amedee Mountain 1707 Comment
  UC2062433  Ivesia baileyi var. baileyi Barbara Ertter with Gary Schoolcraft 1987-6-16 7200 Lassen Skeedaddle Mountains on NE side of Honey Lake; tuffaceous at head of Wendel Canyon. Comment
  CHSC57121  Ivesia paniculata Mary Meyer 1980-7-1 Lassen Ash Valley. 1402 Comment
Read comments
Jan 15 2009
  SEINET3860245  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 mi W of Madeline.; 0 Comment
  UC1502548  Ivesia paniculata Thomas W. Nelson and Jane P. Nelson 1980-7-6 5984 Lassen 16 mi e Adin (along Adin-Madeline Rd); Ash Valley; Ash Valley, Lassen Co. 1554 Comment
Read comments
Aug 12 2008
  UC1594838  Ivesia paniculata J. Stephen Shelly and Ginger V. King 1985-6-29 1029 Lassen Adin-Madeline Rd. Ash Valley (15.4 mi w of U.S. Hwy 395) 1554 Comment
  RSA0005626  Ivesia paniculata Thomas W. Nelson, J. P. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd. 16 miles east of Adin. 1555 Comment
  SEINET6336292  Juncus balticus B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11503 Lassen Blue Door Flat, 7 or 8 miles east of Highway 395 on county road 510 1774 Comment
  HSC23084  Juncus balticus subsp. ater John Pratt 1970-1 14 Lassen Comment
  SEINET3877716  Juncus bufonius Arnold Tiehm, Jan Nachlinger; Gary Schoolcraft 1984-6-25 8824 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to Highway 81.; 0 1829 Comment
  CHSC117520  Juncus bufonius var. bufonius Lowell Ahart; John Dittes 2016-7-13 21140 Lassen Scattered along the south edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest ofk Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1107336  Juncus bufonius var. occidentalis Jean Langenheim 1957-6-22 4364 Lassen near Eagle Lake edge; Eagle Lake Comment
  UCR88026  Juncus confusus J. T. Howell, G. H. True 1973-8-1 50171 Lassen Sierra Nevada Range, Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  CHSC60786  Juncus hemiendytus var. abjectus Vernon H. Oswald; Lowell Ahart 1993-6-3 5474 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 3.7 mi N of Hwy 44 at spur road 32N02E, on the SE side of Pine Creek Valley, between Poison Lake and Susanville. In a large meadow. 1731 Comment
  CHSC66277  Juncus hemiendytus var. abjectus Vernon H. Oswald; Lowell Ahart 1996-6-24 7852 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At a pile of fence posts on the W side of the meadow just S of the cabins. 1633 Comment
  JEPS118350  Juncus hemiendytus var. hemiendytus Lowell Ahart, John Dittes 2011-6-20 17480 Lassen About 15 yards west of the stream, about 40 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS126565  Juncus hemiendytus var. hemiendytus Lowell Ahart, John Dittes 2016-6-7 20991 Lassen 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  RSA201267  Juncus howellii J. T. Howell 1959-9-23 34880 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  CAS-BOT-BC110769  Juncus mertensianus Clare B. Hardham 1969-8-28 17441 Lassen Sierra Nevada. West of Janesville. Comment
  SEINET10533379  Juncus mexicanus Douglas G. LeDoux, David B. Dunn 1975-5-25 LeDoux 791 Lassen Collected 3 miles n of milford on hwy. 395 At honey lake campgrounds Comment
  CHSC29855  Juncus nevadensis Kyle Brown 1978-7-10 95 Lassen In meadow at the base of the dam in Murrers Upper Meadow. 1548 Comment
  HSC95327  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS87450  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  UC1553383  Juncus nevadensis G. Schoolcraft 1988-8-10 1849 Lassen 10 mi ne Susanville (along Hwy 139) 1505 Comment
  UC1601786  Juncus nevadensis Baker and Nutting 1894-7-25 Lassen Willow Creek Comment
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Jul 3 2013
  JEPS103213  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen North slopes of Skedaddle Mountains 1828 Comment
  RSA647524  Juncus nevadensis Marion P. Harthill 1974-6-14 1518 Lassen Madeline. 152 Comment
  CHSC60461  Juncus orthophyllus Mary Ann Showers 1992-6-13 2537 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  JEPS107986  Juncus tiehmii Lowell Ahart, John Dittes 2005-6-2 11959 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  SBBG126190  Juncus trilocularis P. F. Zika 2008-7-14 23893 Lassen S side of St Hwy 44, SE end of Grays Valley near Lodgepole 1730 Comment
  CHSC13790  Juniperus occidentalis Anne Linda Brisk 1969-6-19 6 Lassen 1/4 mi NE of ELBS. 1554 Comment
  HSC24602  Juniperus occidentalis K. P. St. John 1965-5-6 38 Lassen 15 mi. N of Litchfield on Hwy. 395 Comment
  UC572307  Juniperus occidentalis C. G. Albertus 1935-11-1 294 Lassen 2.1 mi ne Chats; Sierraville quadrangle 1569 Comment
  UCD133784  Juniperus occidentalis K. M. Meyer; A. Townesmith 2007-7-19 132 Lassen Lassen National Forest. Ca. 0.2 mile on 29N03, off Hwy 36 on pullout just past a dry creek. 1459 Comment
  UCR164507  Juniperus occidentalis Maile Neel 2000-4-29 G- 4 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  UCR164513  Juniperus occidentalis Maile Neel 2000-4-29 G- 5 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  CAS-BOT-BC81269  Juniperus occidentalis var. australis John Thomas Howell 1976-7-19 51945 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  UC1137699  Kelloggia galioides A. Simontacchi 1940-6-14 860 Lassen 7.5 mi wsw Schoonamaker Lake; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UC889305  Kelloggia galioides C. L. Hitchcock 1940-5-26 6602 Lassen ca 12 mi n Fall River Mills, Shasta County (on Fall River); Fall River 1371 Comment
  JEPS107461  Koeleria macrantha Lowell Ahart, John Dittes 2005-6-1 11860 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC53716  Koeleria macrantha M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  UC2027323  Kyhosia bolanderi Anthony Baniaga 2011-8-16 499 Lassen Lassen National Forest. Along F.S. 10, ca. 1 mi NE of Cummings Spring. Red Cinder quadrangle Comment
  CHSC5067  Lactuca serriola L. Stites 1967-7-4 122 Lassen Collects at Eagle Lake Biology Station. 1371 Comment
  RSA0009789  Lactuca tatarica var. pulchella Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CAS-BOT-BC341487  Lagophylla ramosissima John Thomas Howell 1973-8-1 50156 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  JEPS117573  Lagophylla ramosissima Lowell Ahart, John Dittes 2010-7-31 16997 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS38999  Lagophylla ramosissima W. L. Jepson 1918-8-2 7776 Lassen Bedswith Pass 1463 Comment
  CAS-BOT-BC341481  Lagophylla ramosissima Barrett Anderson 1986-7-9 3122 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  RSA0009792  Lagophylla ramosissima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA795323  Lagophylla ramosissima subsp. ramosissima L. Ahart, John Dittes 2010-7-31 16997 Lassen On the north side of the road, about 5 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  RSA0035916  Lasthenia glaberrima Lowell A. Ahart, John Dittes 2008-6-20 14901 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SBBG128882  Lasthenia glaberrima L. Ahart, J. Dittes 2008-6-20 14901 Lassen sides of a vernal pool, ca. 100 yards W of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  SEINET11447828 Image available Layia glandulosa F. B. Headley 1915-5-28 s.n. Lassen Honey lake Comment
  UCD55163  Layia glandulosa Ellen Dean 2006-5-15 3051 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  POM30358  Layia glandulosa subsp. glandulosa Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC4789  Lemna trisulca R. Carter 1967-7-13 591 Lassen Ca. 5 mi E of Eagle Lake Biology Station, at point where rd. comes nearest to Willow Creek. 1560 Comment
  CHSC4842  Lemna trisulca R. Carter 1967-7-13 591 Lassen 5 mi e of Eagle Lake Field Station, at point where rd comes nearest to Willow Cr. 1560 Comment
  CHSC99531  Lepidium chalepense Lowell Ahart; John Dittes 2008-6-20 14978 -B Lassen Where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UCR67374  Lepidium latifolium George K. Helmkamp 1990-9-23 A- 4 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CAS-BOT-BC12813  Lepidium perfoliatum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49209 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CHSC110310  Lepidium perfoliatum L. P. Janeway; B. Castro 2012-7-2 10926 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  CHSC36502  Lepidium perfoliatum Theresa Costa 1982-6-2 23 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd, ca. 10 yd e Ravendale Rd. Comment
  CHSC91205  Lepidium perfoliatum Lowell Ahart; John Dittes 2005-6-2 11920 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS95731  Lepidium perfoliatum Vernon H. Oswald and L. Ahart 1995-6-19 6899 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395 1383 Comment
  NY90026  Lepidium perfoliatum D. B. Dunn 1971-6-2 17749 Lassen 3 miles south of Hallelujah Junction, on US Highway 395, Junction of US 395 and California 70 Comment
  SEINET10448290  Lepidium perfoliatum Mary Susan Taylor 1974-7-8 Taylor 259 Lassen Ca. 1 mi N of Honey Lake, ca. 1 mi S of Standish, Honey Lake Wildlife Refuge. Comment
  UCD63835  Leptochloa fusca subsp. fascicularis Chandler Jensen 1959-9-8 Lassen Honey Lake Valley near Standish. Comment
  UC572594  Leptodactylon pungens E. Sawyer 1935-6-27 230 Lassen Long Valley; Sierraville Quad., Long Valley Comment
  POM74198  Leptosiphon harknessii Marcus E. Jones 1897-6-24 10397 Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC584305  Lesquerella occidentalis subsp. occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2271 Lassen s Susanville (Bare summit ridge and ridges south west of Diamond Mt.); bare summit ridge and ridges sw of Diamond Mt. 2164 Comment
  CAS-BOT-BC334598  Leucanthemum vulgare G. Schoolcraft 1987-6-17 1746 Lassen Along Hwy 36 about 3 miles east of Westwood 1554 Comment
  CHSC101047  Leucocrinum montanum John Dittes 2008-5-22 1524 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace and toe-slope on northeast side of Willow Creek. 483 Comment
  CHSC68773  Leucocrinum montanum Vernon H. Oswald; Lowell Ahart 1997-5-27 8509 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  HSC30081  Leucocrinum montanum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19264 Lassen Harvey Valley near Cone Springs Comment
  NY962818  Leucophysalis nana N. H. Holmgren 1980-7-4 9510 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 Comment
  SEINET12319573  Leucophysalis nana J. D. Prouty 1978-1 9 Lassen E of Eagle Lake, at Lower Dry Lake, above W shore 1646 Comment
  HSC75895  Lewisia nevadensis D. H. Norris, S. Dowty, Thomas W. Nelson 1971-6-22 19194 Lassen Harvey Valley near Cone Springs Comment
  CHSC36501  Lewisia rediviva Theresa Costa 1982-6-2 25 Lassen Along Ravendale Rd ca. 2 mi e of Horse Lake. Comment
  CAS-BOT-BC444493  Lewisia triphylla George W. Gillett 1957-7-21 863 Lassen Lassen Volcanic National Park. Juniper Lake - Cameron Meadow trail 2118 Comment
  JEPS103214  Leymus cinereus G. Schoolcraft 1993-9-18 2343 Lassen 1 mile N of Sagehen Summit on W side of Hwy 395 1706 Comment
  JEPS68547  Leymus cinereus W. L. Jepson 1918-8-2 7795 a Lassen Raker Ranch Honey Lake Valley 1219 Comment
  UC1924193  Leymus cinereus Debra Valov 2005-8-20 2005237 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1279 Comment
  UC70685  Leymus cinereus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  CAS-BOT-BC274463  Leymus triticoides J. Burtt Davy 1897-6-17 3320 Lassen Honey Lake Valley Comment
  CAS-BOT-BC274466  Leymus triticoides John Thomas Howell 1974-7-8 50467 Lassen Susanville 1295 Comment
  UC1037138  Leymus triticoides Leo Whitney 1925-6-28 3364 Lassen Bieber Comment
  UC1542930  Leymus triticoides G. Schoolcraft 1987-6-3 1719 Lassen Painter Flat; w side 1706 Comment
  UCD65617  Leymus triticoides L. Whitney 1933-8-4 2128 Lassen Lassen National Forest. Sheepshead, ca. 10 miles NW of N end of Eagle Lake. 1889 Comment
  JEPS96064  Ligusticum grayi Vernon H. Oswald and Lowell Ahart 1996-8-1 8127 .1 Lassen s.-s.w. Westwood (ca. 2 mi. n. of Dyer Mt. Lookout, Forest Rd. 28N56 (D-line), on downhill side of rd.) 1737 Comment
  CAS-BOT-BC130708  Lilium pardalinum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49433 Lassen Elysian Valley, west of Janesville 1325 Comment
  POM109716  Lilium pardalinum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  SD2783  Limnanthes douglasii Mary S. Snyder 1894-4-28 Lassen Lassen 518 Comment
  CHSC54871  Limosella acaulis Vernon H. Oswald 1991-9-23 4878 Lassen Butte Lake in the northeast corner of the park. Lassen Volcanic Park. 1841 Comment
  JEPS120859  Limosella acaulis Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18753 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS120860  Limosella aquatica Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18755 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  UCR228120  Limosella aquatica R. F. Thorne, Larry E. DeBuhr 1975-8-22 47205 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  JEPS96128  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1996-6-24 7879 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow in Yellow Pine Forest, edge of Papoose Creek where it leaves the N end of the meadow 1633 Comment
  RSA0011457  Linanthus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46973 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  SEINET10496792  Linanthus ciliatus Mary Susan Taylor 1974-1 Taylor 284 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC1124083  Linanthus harknessii A. Simontacchi 1940-5-28 787 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1483841  Linanthus harknessii G. Schoolcraft 1980-7-16 314 Lassen near Nelson Corral Reservoir 1804 Comment
  CHSC64802  Linanthus pungens Vernon H. Oswald 1995-5-24 6758 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. On a outcrop at the base of the Amedee Mtns. 1280 Comment
  UC1553388  Linaria genistifolia subsp. dalmatica G. Schoolcraft 1988-8-23 1852 Lassen sw corner of Chestnut and Grand in Susanville Susanville 1310 Comment
  RSA0035912  Linum lewisii var. lewisii Lowell A. Ahart, John Dittes 2008-6-20 14917 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA795325  Linum lewisii var. lewisii L. Ahart, John Dittes 2010-7-31 16981 Lassen 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  POM111784  Lipocarpha micrantha C. C. Bruce 1897-1 s.n. Lassen Susanville? Comment
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Jan 23 2011
  CAS-BOT-BC435427  Lithophragma glabrum John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 1524 Comment
  UC1136912  Lithophragma glabrum L. R. Short 1936-4-28 S- 337 Lassen Harvey Valley; Lassen National Forest, Harvey Valley 1706 Comment
  CAS-BOT-BC435430  Lithophragma glabrum Louella Bass 1975-4-15 22 Lassen Elysian Valley; Sierra Nevada 1325 Comment
  JEPS47671  Lithophragma tenellum Milo S. Baker 1890-1 Lassen Milford Comment
  JEPS119670  Lithospermum arvense Lowell Ahart, John Dittes 2012-7-11 18351 Lassen About 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittvile, 3955 feet east of Lassen - Shasta County Line, Fall River Valley. Comment
  CHSC91203  Lithospermum ruderale Lowell Ahart; John Dittes 2005-6-2 11932 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  POM72685  Lithospermum ruderale Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1924198  Lithospermum ruderale Debra Valov 2005-8-21 2005231 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1279 Comment
  SEINET10456166  Lithospermum ruderale Paul Gallian, David B. Dunn 1971-6-2 Gallian 463 Lassen 6 mi. N of Hallelujah Jct. on US Hwy 395. 1402 Comment
  SEINET8588616  Lomatium austiniae S. Jesselson, A. Ortega, J. White, A. Rosenblum 2015-5-28 NV 030 -1064 Lassen Plumas allotment. HWY 395 into CA, first median crossing after check station, turn right, follow road left (north) to proposed fence site perpendicular to power line. 1547 Comment
  CHSC1962  Lomatium bicolor J. Wakeman 1963-5-11 Lassen Bieber. Comment
  JEPS19758  Lomatium bicolor var. leptocarpum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6006 Lassen 5.9 mi S of Madeline 1615 Comment
  UC1123077  Lomatium bicolor var. leptocarpum Robert W. Gardner 1939-6-6 G- 28 Lassen Harvey Valley Halls Flat Quad., Harvey Valley Comment
  UC1609378  Lomatium bicolor var. leptocarpum Vernon H. Oswald and Lowell Ahart 1993-6-28 5620 Lassen e. Poison Lake (n. of Hwy. 44 along Rd. 33N47 at n.e. end of Little Harvey Valley, between Champs Flat and Harvey Valley, meadow bordering a drying branch of Pine Creek); Little Harvey Valley 1737 Comment
  RSA27417  Lomatium bicolor var. leptocarpum C. L. Hitchcock 1940-5-26 6648 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA452590  Lomatium donnellii Christopher Davidson 1975-6-7 2755 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA0049635  Lomatium foeniculaceum subsp. macdougalii Dean Wm. Taylor 2012-6-6 21225 Lassen Vicinity Hunsinger Flat (ca. 10 miles ESE of Adin), 88 feet due E of junction of Forest Road 38N33 with Forest Road 38N04 1600 Comment
  JEPS17107  Lomatium macrocarpum T. Brandegee 1892-6-23 Lassen Honey Lake Comment
  SEINET10545797  Lomatium macrocarpum David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17756 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  RSA715615  Lomatium nevadense L. Ahart 2005-6-1 11847 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction 1449 Comment
  CHSC101028  Lomatium nevadense var. nevadense John Dittes 2008-5-22 1540 Lassen Modoc Plateau; ca 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca. 465 feet east of intersection of Hwy 139 and FS Road 36N02. 483 Comment
  UC1567383  Lomatium nevadense var. nevadense G. Schoolcraft 1989-5-3 1864 Lassen near Karlo (n.w. corner Secret Valley); Secret Valley 1356 Comment
  SEINET5333506  Lomatium nevadense var. nevadense D. H. French 1968-6-3 2883 Lassen Near Hwy, 395, 1.1 mi S of Ravendale, just behind gas station-cafe-bar building. Comment
  CHSC60710  Lomatium piperi Vernon H. Oswald; Lowell Ahart 1993-6-3 5471 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  CAS-BOT-BC217798  Lomatium ravenii G. Schoolcraft No date on label 212 Lassen North of Shaffer Mountain 1356 Comment
  CHSC27666  Lomatium ravenii Robert A. Schlising 1978-7-2 3309 Lassen Ca 1.5 mi S Ravendal, near jct hwy 395 and horse Lake Road; large population between Horse Lake Road and S. Pac. RR tracks. 1621 Comment
  LA35567  Lomatium ravenii Lincoln Constance; Rimo Bacigalupi 1959-6-14 3672 ISOTYPE Lassen 1 mi. S of Ravendale 1462 Comment
  LA84783  Lomatium ravenii Tracy Call; Viola Call 1961-5-30 2048 Lassen about 2 mi. S of Ravendale 1462 Comment
  UC628465 Image available Lomatium ravenii David D. Keck and J. Clausen 1935-6-24 3738 Lassen 2 mi. s. Ravendale 1464 Comment
  SJSU3564  Lomatium triternatum M. D. Fleschner 1965-7-13 120 Lassen 14 mi NE of Susanville on State Route 139 1828 Comment
  CHSC42630  Lomatium triternatum var. macrocarpum Vernon Oswald 1986-5-28 2059 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  RSA99367  Lonicera conjugialis F. W. Peirson 1926-6-22 6822 Lassen Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
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Apr 25 2013
  POM28313  Lotus crassifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC80952  Lotus nevadensis var. nevadensis T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  UC1523783  Lotus oblongifolius var. oblongifolius Gary Schoolcraft 1981-7-14 534 Lassen s of Pittville (along Beaver Creek); Beaver Creek 1158 Comment
  RSA253250  Lotus unifoliolatus A. A. Heller 1938-6-23 15199 Lassen Slope east of Fredonyer Pass. 1646 Comment
  JEPS85684  Lupinus W. L. Jepson 1937-8-11 19375 Lassen Milford 1280 Comment
  CHSC905  Lupinus arbustus R. Gein 1946-6-20 Lassen Mt. Fredonyer. 2133 Comment
  UC126947  Lupinus arbustus Mrs. R. M. Austin and Bruce June 1898 2144 Lassen Madaline Plains Madaline Plains <Madeline Plains?>; High Mts. Madaline Plains <Madeline Plains?> Comment
  CAS-BOT-BC208728  Lupinus argenteus var. heteranthus F. Payne 1929-7-12 74 Lassen Lost Lake, Warner Mts. 2286 Comment
  CAS-BOT-BC208748  Lupinus argenteus var. heteranthus Alice Eastwood; John Thomas Howell 1940-6-16 8334 Lassen Near Susanville. Comment
  CHSC7678  Lupinus argenteus var. heteranthus Beverley J. Wise 1969-5-18 61 Lassen 7.7 mi. East of Susanville on the south side of Las. Co. Rd. 125. 1341 Comment
  CHSC99140  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2008-6-19 14873 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  NY736923  Lupinus argenteus var. heteranthus P. A. Munz 1947-5-20 11888 Lassen Milford 1265 Comment
  NY736932  Lupinus argenteus var. heteranthus J. Huber 1971-6-2 140 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402 Comment
  NY736987  Lupinus argenteus var. heteranthus M. Bourell 1997-5-31 5879 Lassen Wendel Road 10.9 miles southeast of Highway 395 Comment
  UC1137309  Lupinus argenteus var. heteranthus L. R. Short and Wm. Gansberg 1936-7-3 S- 471 Lassen Burgess Spr. Exp. Range; Lassen National Forest 1859 Comment
  UCD106820  Lupinus argenteus var. heteranthus Leo Whitney 1934-7-17 s.n. Lassen Lassen N. F. Comment
  SEINET5328130  Lupinus brevicaulis M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-14 86- 40 -1 Lassen Near Hwy 395, at Noble Emigrant Trail Sign, 7 rd miles N of Litchfield 1524 Comment
  RSA59517  Lupinus caudatus E. K. Balls 1950-5-21 14824 Lassen Standish, 7 miles from junction of Highway 36 and 395. 1250 Comment
  RSA60369  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 miles south of Doyle. 1372 Comment
  SEINET10452632  Lupinus caudatus Mary Susan Taylor 1982-6-12 Taylor 4653 Lassen T25N R17E se sec 8. Doyle quad. In sandy Sagebrush Scrub, in Doyle, ca. 1/2 mi e of Hwy 395. Comment
  SEINET12161686  Lupinus caudatus N. E. Heiken 1978-1 57 Lassen SE of Eagle L. T31N R11E Sec22 1554 Comment
  SEINET10490606  Lupinus caudatus subsp. caudatus H. Dearing, M. Dearing 1938-6-30 Dearing 2228 Lassen 40 mi. W of susanville, poison lake. 1219 Comment
  SD51227  Lupinus confertus Darley F. Howe 1960-9-21 2993 Lassen 2 miles north of Janesvill on Hwy 395 1280 Comment
  CHSC91961  Lupinus lepidus var. confertus Richard R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy. 395 ca. 7.8 miles southeast of Susanville. 1293 Comment
  SEINET5332986  Lupinus lepidus var. confertus R. R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy 395, ca. 7.8 miles southeast of Susanville. 1293 Comment
  SFV18614  Lupinus lepidus var. confertus T. W. Nelson, J. P. Nelson 1990-7-14 8776 Lassen Along State Route CA-395 at Janesville Road. Lassen County Site #3. 1250 Comment
  UC82212  Lupinus lepidus var. sellulus Mrs. R. M. Austin Aug 1882 Lassen Kings Valley Comment
  SEINET10452640  Lupinus meionanthus Taylor 1982-8-27 Taylor 5050 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  NY747428  Lupinus microcarpus G. Schoolcraft 1984-7-11 1291 Lassen About 5 miles south of Madeline along Highway 395 1615 Comment
  SEINET10450708  Lupinus nevadensis Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2595 Lassen Hallelujah jct. Intersection of u.s. Hwy. 395 And state hwy. 70. In open waste Area adjacent to artemisia tridentata community. 1433 Comment
  SEINET10450722  Lupinus obtusilobus Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in Lassen Volcanic National Park near the peak. In dry ground. Comment
  RSA0005616  Lupinus onustus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  POM24043  Lupinus polycarpus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UCR79417  Lupinus polyphyllus subsp. superbus J. T. Howell, G. H. True, Margaret Williams 1973-6-28 49412 Lassen Sierra Nevada Mtns/ Modoc Plateau, Elysian Valley, west of Janesville 1326 Comment
  SEINET8059970  Lupinus polyphyllus var. burkei W. W. Eggleston 1910-1 6305 Lassen Vicinity of Doyle Station 1240 Comment
  SEINET10486219  Lupinus saxosus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2575 Lassen 6 mi s of adin; along state hwy. 139 Right-of-way. In basalt-clay, grassy road Bank. Artemisia-juniper association. 1372 Comment
  RSA69483  Luzula comosa F. W. Peirson 1926-6-22 6826 Lassen Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
  JEPS67163  Luzula comosa var. laxa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek, Big Valley Mts. Comment
  SEINET7949966  Lycopus asper T. L. Breene, H. Sampson 1937-1 56 Lassen Honey Lake Valley. Comment
  RSA252467  Machaeranthera canescens var. canescens R. F. Thorne, C. W. Tilforth 1969-9-6 39268 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CAS-BOT-BC342658  Madia citriodora G. Schoolcraft 1989-6-5 1897 Lassen Intersection of Hwy. 139 & A2 south of Adin Comment
  SD132249  Madia elegans G. Helmkamp 1990-9-23 A 6 Lassen 3.0 miles east of Susanville, along State Road 36. 1340 Comment
  CAS-BOT-BC343698  Madia elegans Margaret Williams; Louella Bass 1972-10-22 EV 7 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  UCD134243  Madia elegans J. E. Stuart 1929-8-1 2035 Lassen Roy Hardwood Ranch, Milford. Comment
  CAS-BOT-BC344299  Madia exigua H. D. Ripley; R. C. Barneby 1943-6-13 5716 Lassen South of Johnstonville 1328 Comment
  JEPS94816  Madia glomerata Vernon H. Oswald and Lowell Ahart 1998-9-8 9576 Lassen Highway 299 at the Rail Road overpass on the e side of Nubieber Nubieber 1255 Comment
  CAS-BOT-BC334688  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  CAS-BOT-BC343057  Madia gracilis John Thomas Howell 1974-7-10 50552 Lassen Elysian Valley 1325 Comment
  JEPS117590  Madia gracilis Lowell Ahart, John Dittes 2010-7-31 17006 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin Comment
  CAS-BOT-BC343061  Madia gracilis Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9497 Lassen Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale 1680 Comment
  RSA713116  Madia minima L. P. Janeway, B. Castro 2005-7-10 8481 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 & 28N02) and Road 28N01 1859 Comment
  RSA715984  Madia minima L. Ahart, John Dittes 2005-6-2 11940 Lassen About 1 1/2 miles northeast of the Anderson Ranch Home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  JEPS128415  Maianthemum stellatum Catherine Bauer with Ellen Bauer Benson 2017-8-16 21 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UC1124510  Marrubium vulgare A. Simontacchi 1940-7-20 933 Lassen Halls Flat Ranger Station , Halls Flat Quad. (Lassen National Forest) Comment
  HSC23508  Marrubium vulgare A. E. Anderson 1967-7-11 78 Lassen Around Bly Tunnel outlet, 1 mi. E of rd. to Eagle Lake Biological Station 1555 Comment
  RSA0011558  Marsilea vestita R. F. Thorne, Larry E. DeBuhr 1975-8-22 46994 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CHSC66858  Marsilea vestita subsp. vestita Vernon H. Oswald; Lowell Ahart 1996-9-10 8274 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  CHSC64862  Matricaria discoidea Vernon H. Oswald; Lowell Ahart 1995-6-19 6876 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. Along the road. 1383 Comment
  CHSC71221  Matricaria discoidea Vernon H. Oswald; Lowell Ahart 1998-6-4 9138 Lassen Red Rock Rd. at its junction with Hwy. 395 south of Constantia. 1365 Comment
  CHSC36282  Matricaria occidentalis M. S. Taylor 1982-6-12 4651 Lassen Alkali flats in Hartson Lake Refuge, ca. 1 mi n of Hartson lake on n side of Honey Lake, ca. 13 mi se of Susanville. 1222 Comment
  CHSC5216  Matricaria occidentalis P. Collett 1946-6-17 Lassen Eagle Lake. Willow Creek Valley. 1463 Comment
  CHSC27638  Medicago lupulina Jerry Snodgrass 1978-7-16 50 a Lassen Along Hwy 36, several mi E of Freedonyer Pass. 1493 Comment
  CHSC7670  Medicago sativa Beverley J. Wise 1969-6-4 63 Lassen North edge of Milford on Hwy 395. 1249 Comment
  SCFS2169  Medicago sativa H. Naqui 1965-7-13 130 Lassen PCT dunes [?] bridge, Hwy 139 1402 Comment
  JEPS85745  Melica bulbosa Roy E. Buck and Robert A. Price 1988-6-26 1033 Lassen ca 0.5 air km n Fredonyer Peak main summit (on a subsidiary peak, ca 30 air km nne of Susanville); Fredonyer Peak 2377 Comment
  JEPS93977  Melica fugax Vernon H. Oswald 1998-6-22 9232 Lassen ca. 18 air mi. n. Westwood (Champs Flat Rd. (A-21) 1.8 mi. n. of Hwy. 44) 1749 Comment
  UC188796  Melica fugax Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UCD37478  Melica fugax Beecher Crampton 1960-6-18 5726 Lassen Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  CHSC60909  Mentzelia albicaulis Vernon H. Oswald; Lowell Ahart 1993-7-8 5654 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poisen Lake. 1709 Comment
  JEPS117562  Mentzelia albicaulis Lowell Ahart, John Dittes 2010-7-31 17019 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS29743  Mentzelia albicaulis Rimo Bacigalupi and L. R. Heckard 1962-5-28 8498 Lassen 2.7 mi n Milford (along U.S. highway 395) 1219 Comment
  JEPS124817 Image available Mentzelia albicaulis N. L. Rechen 1964-7-1 73 Lassen 1 mile north of Susanville. H. 139 Comment
  CHSC117538  Mentzelia congesta Lowell Ahart; John Dittes 2016-7-12 21150 A Lassen Sides of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 miles south ofd County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1191589  Mentzelia dispersa Verne Grant, Irving Schneider 1947-8-1 8228 Lassen w end Section 19 (Irringation ditch running southwest into State Fish & Game nesting area.); Medelain Plain Comment
  JEPS88213  Mentzelia dispersa Vernon H. Oswald and Lowell Ahart 1996-6-17 7772 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville 1432 Comment
  RSA152663  Mentzelia dispersa I. L. Wiggins, Dorothy Wiggins 1961-6-10 16323 Lassen Along California Highway 36 abut 6 miles W of Sussanville. Comment
  SEINET5333248  Mentzelia laevicaulis R. H. Miller 1954-8-27 1116 Lassen On U.S. 395, 3 miles north of Doyle. Comment
  UC420650  Mentzelia montana T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  CHSC7719  Mertensia ciliata var. stomatechoides Clarence Ash 1969-5-21 2 Lassen Diamond Mountain, distance from Susanville undetermined. 1828 Comment
  CHSC61178  Micranthes aprica Vernon H. Oswald; Lowell Ahart 1993-5-12 5373 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood), at a large opening in the forest. 1737 Comment
  CHSC66261  Micranthes oregana Vernon H. Oswald; Lowell Ahart 1996-6-24 7889 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  SEINET5345127  Micromonolepis pusilla A. Tiehm 1980-1 5757 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CHSC99295  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-20 14951 Lassen About 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC99301  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-22 15036 Lassen About 220 yards west of the road levee, open dry meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  JEPS114755  Microseris laciniata subsp. laciniata Lowell Ahart, John Dittes 2008-6-22 15026 Lassen Open meadow area, about 50 yards southwest of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  UC1070116  Microseris nutans Robert W. Gardner 1937-6-16 G- 14 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1798 Comment
  UCD55154  Microsteris gracilis Ellen Dean 2006-5-15 3042 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  RSA122927  Microsteris gracilis subsp. gracilis Anonymous 1936-5-7 S- 343 Lassen Lassen National Forest, MDM, Burgess Spr. Exp. Range 1738 Comment
  RSA122924  Microsteris gracilis subsp. humilis L. R. Short 1936-5-7 S- 343 Lassen MDM, Burgess Spring Experiment Range. 1738 Comment
  RSA104219  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 9803 Lassen Hills between Madeline and Likely 1524 Comment
  RSA104221  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 9801 Lassen 4 miles S of Ravendale. 1280 Comment
  CDA41658  Mimulus breviflorus S. E. Schoenig 1998-7-5 98 -71 Lassen East side of Poison Lake, 50 meters west of Pitville Road, 1.8 miles northwest of Highway 44, east of railroad track and wet ditch. Comment
  CHSC118485  Mimulus evanescens Allison Sanger; Loren Gehrung 2003-6-11 Lassen Lassen National Forest. Eagle Lake Ranger District. Near Rankin Flat west of Spalding, roughly 1.2 air miles west of Eagle Lake marina. 1822 Comment
  POM252822  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi. south of Westwood. 1524 Comment
  CDA41793  Mimulus guttatus Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 533 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  UC27028  Mimulus guttatus Mrs. C. C. Bruce June 1898 2276 Lassen Shumway Comment
  SEINET10570320  Mimulus guttatus Jeffrey Huber 1971-6-11 Huber 320 Lassen 3 mi e of westwood, on calif hwy 36, in volcanic soils, in pinus jeffreyi. 1608 Comment
  SEINET10962495  Mimulus mephiticus Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 882 Lassen Collected 3 mi n of milford. On hwy 395 at honey lake campgrounds. Comment
  UCD122771  Mimulus nanus S. E. Schoenig 1998-7-5 98- 72 Lassen by S side of Hwy 44 vicinity of Bogard campground. 1737 Comment
  SEINET10929288  Mimulus nanus Paul Gallian, David B. Dunn 1971-6-2 Gallian 467 Lassen 6 mi n of halleluja jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  HSC22960  Mimulus nanus var. mephiticus John Pratt 1970-7-11 76 Lassen At base of Dyer Mtn lookout tower. Comment
  JEPS24856  Mimulus nanus var. mephiticus Jean Langenheim 1957-6-26 4377 Lassen nw end Said Valley 1645 Comment
  UC1537591  Mimulus nanus var. mephiticus Gordon H. True Jr. 1936-6-26 548 Lassen 2 mi e Eagle Lake (head of creek); Willow Creek 1584 Comment
  UC1063561  Mimulus nanus var. nanus A. Simontacchi 1940-5-14 718 Lassen 3.5 mi sw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1025076  Mimulus primuloides Leo Whitney 1933-8-14 1595 Lassen meadow near Slate Creek (ca 8 mi nw of Eagle Lake); Lassen National Forest 1920 Comment
  JEPS88207  Mimulus pulsiferae Vernon H. Oswald and Lowell Ahart 1996-6-24 7865 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake; Modoc Plateau, Montane Meadow in Yellow Pine Forest. On the W side of the meadow ca. 0.2 mi S of the cabins. 1633 Comment
  HSC26594  Mimulus torreyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19161 Lassen 3 mi. N of Westwood Comment
  HSC20810  Mimulus torreyi M. T. Milligan 1964-7-16 138 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC1523779  Minuartia douglasii Gary Schoolcraft 1981-6-9 440 Lassen s Pittville 1249 Comment
  JEPS94562  Mitella pentandra Vernon Oswald and Lowell Ahart 1997-6-24 8615 Lassen slope along Forest Rd. 29N43 5.4 mi e Gold Run Rd. (n side of mtn., s of Susanville); Diamond Mtn. 1889 Comment
  CAS-BOT-BC221781  Monardella odoratissima L. P. Janeway 1990-7-4 3771 B Lassen Ca 0.9 mi NE of Meadowview [Mountain View] Peak 1981 Comment
  CHSC5270  Monardella odoratissima subsp. glauca W. Vinyard 1946-6-11 Lassen Pine Creek. 1580 Comment
  CHSC5272  Monardella odoratissima subsp. glauca J. B. Kimsey 1946-6-11 Lassen Pine Creek, near Eagle Lake. 1580 Comment
  CHSC65314  Monardella odoratissima subsp. glauca Vernon H. Oswald; Lowell Ahart 1995-8-14 7192 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  JEPS95748  Monardella odoratissima subsp. glauca Vernon H. Oswald and L. Ahart 1995-8-14 7192 Lassen Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  UCR268963  Monardella odoratissima subsp. glauca Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31425 Lassen along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville 1733 Comment
  CAS-BOT-BC213932  Monardella odoratissima subsp. pallida A. M. Vollmer; L. Beane 1953-7-1 47 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  UC506977  Monardella odoratissima subsp. pallida George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen Forest 1722 Comment
  CAS-BOT-BC222146  Monardella odoratissima subsp. pallida A. E. Anderson 1967-7-13 92 Lassen Eastern slope of Dean's Ridge, 0.6 mi. s of Five Corners on road to Gallatin Beach 1676 Comment
  CHSC75490  Monolepis nuttalliana Vernon H. Oswald; Lowell Ahart 1999-6-9 9754 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030. 1347 Comment
  JEPS114695  Monolepis nuttalliana Lowell Ahart, John Dittes 2002-6-20 14973 Lassen W of where the levee road crosses Big Valley Canal, in Big Valley, about 4 mi (air) NE of the Headquarters at Ash Creek State Wildlife Area, about 7 mi (air) NE of Bieber 1263 Comment
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Oct 5 2019
  UC1136461  Monolepis nuttalliana A. Simontacchi 1940-6-4 810 Lassen 14.8 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. 1783 Comment
  RSA370315  Monolepis pusilla A. Tiehm, Margaret J. Williams, Gary Schoolcraft 1986-5-12 10351 Lassen 1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
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Feb 14 2017
  CHSC4797  Montia chamissoi R. Carter 1967-7-7 583 Lassen Collected at W end of reservoir in open wet meadow. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  CHSC57311  Montia chamissoi Mary Meyer 1980-7-9 Lassen In Horse Camp Spring. 1706 Comment
  HSC95205  Montia chamissoi Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 542 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  OBI76977  Montia chamissoi Anthony Baniaga 2011-6-20 385 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  UC1136741  Montia chamissoi A. Simontacchi 1940-5-21 763 Lassen 4.1 mi sse of Blacks Mountain (Lassen National Forest); Lassen National Forest 1737 Comment
  UC1136742  Montia chamissoi Robert W. Gardner 1937-6-14 G 3 Lassen Burgess Spring Experimental Range 1767 Comment
  CAS-BOT-BC444691  Montia chamissoi George W. Gillett 1957-7-28 932 Lassen Lassen Volcanic National Park. One mile above Butte Lake, on Widow Lake Trail. 1905 Comment
  POM312351  Montia chamissoi Malcolm A. Nobs, S. Galen Smith 1949-7-21 1064 Lassen Lassen County: Shallow marshy stream from springs, 4 miles N of Madeline Comment
  HSC30029  Montia dichotoma D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19275 Lassen Harvey Valley near Cone Springs Comment
  CHSC60845  Montia linearis Vernon H. Oswald; Lowell Ahart 1993-6-28 5611 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  JEPS120896  Montia linearis Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18736 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC262633  Muhlenbergia asperifolia John Thomas Howell 1934-7-8 12489 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC262636  Muhlenbergia asperifolia C. S. Robinson 1928-9-18 120 Lassen Lassen National Forest. Hanna Estate, Morgan Springs. Around Sulphur Springs 1508 Comment
  JEPS107815  Muhlenbergia asperifolia Lowell Ahart, John Dittes 2005-6-2 11972 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  POM115416  Muhlenbergia asperifolia Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA129322  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6072 Lassen Baxter Creek 1280 Comment
  UC589858  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6059 Lassen near Red Rock; Sierraville Quadrangle 1341 Comment
  CAS-BOT-BC260595  Muhlenbergia filiformis G. Schoolcraft 1997-7-30 2623 Lassen W slope of Diamond Mountain 1889 Comment
  CHSC60477  Muhlenbergia filiformis Mary Ann Showers 1992-6-12 2519 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  CHSC96693  Muhlenbergia filiformis Gordon Leppig; Juli Neander, Kai Neader 1997-7-25 680 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  UC1024665  Muhlenbergia filiformis Leo Whitney 1934-8-15 2184 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  UC1024685  Muhlenbergia filiformis Leo Whitney 1933-8-3 2160 Lassen ca 10 mi nw north end of Eagle Lake; Lassen National Forest, Sheepshead 1889 Comment
  RSA256304  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-6-5 6237 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  RSA256324  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-7-1 6240 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  UCD86769  Muhlenbergia jonesii A. H. Shunk 1923-1 12 Lassen Bogard Ranger Station. Comment
  POM114433  Muhlenbergia richardsonis Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  UC1024739  Muhlenbergia richardsonis Leo Whitney 1933-8-3 3042 Lassen ca 8 mi nw Eagle Lake (on open flats); Lassen National Forest, Slate Creek 1920 Comment
  UC1132396  Muhlenbergia richardsonis Robert W. Gardner 1939-7-10 G- 35 Lassen Grass Valley Halls Flat Quadrangle Comment
  UCD86950  Muhlenbergia richardsonis R. M. Love 1940-7-5 s.n. Lassen Madeline Plains. Comment
  SEINET4690286  Muhlenbergia richardsonis G. Schoolcraft 1999-6-30 2852 Lassen Small res. 1 mi. w. of Horne Ranch-12 mi. e. of Ravendale, CA., Susanville 1646 Comment
  RSA377621  Muilla transmontana Christopher Davidson 1975-6-7 2762 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CAS-BOT-BC515651  Muilla transmontana G. Schoolcraft 1989-5-3 1863 Lassen NW corner of Secret Valley near Karlo Comment
  HSC63965  Muilla transmontana Teresa Prendusi 1980-5-8 Lassen Balls Canyon N of Shaffer Mtn. 6 mi. W of Hwy. 395 1372 Comment
  JEPS96136  Myosotis discolor Vernon H. Oswald and Lowell Ahart 1996-6-24 7880 Lassen ca. 0.5 mi. e. of Eagle Lake Rd. (A1) and 2.5 mi. s. of Eagle lake (Papoose Meadows, along Papoose Creek where it leaves the n. end of the meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  UC1924589  Myosurus apetalus Debra Valov 2006-5-29 2006019 Lassen Bieber California, Lassen Co., Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  NY492641  Myosurus apetalus M. J. Williams 1986-5-14 8638- 3 Lassen Tuledad Canyon Road, from Duck Flat to Ravendale. 0.1 mile west of California-Nevada line. Comment
  SEINET12093181  Myosurus apetalus M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -3 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale. 0.1 mi W of Calif-Nev line Comment
  SEINET5338208  Myosurus aristatus M. J. Williams, G. Schoolcraft; A. Tiehm 1986-5-14 86- 38 -3 Lassen Tuledad Canyon Rd., from Duck flat to Ravendale. 0.1 mi W of Calif-Nev line. Comment
  POM93121  Myriophyllum hippuroides Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC77217  Myriophyllum quitense G. Schoolcraft 1996-7-10 2533 Lassen Willow Creek, ne. of Susanville. 1432 Comment
  CHSC30584  Myriophyllum sibiricum P. V. Caldwell 1972-6-16 264 Lassen 3/4 miles E, on Forest Rd. 5, 1 1/2 miles from the station in Kildeere ond. Comment
  UC1101499  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-7-30 8195 Lassen W end of Tule Lake. Comment
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Aug 12 2008
  RSA323647  Myriophyllum sibiricum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  SEINET12185161  Myriophyllum sibiricum A. Tiehm, Schoolcraft, G. 1984-1 9243 Lassen Buckhorn Resevoir on the south side of Buckhorn road to Ravendale, about 6 mi W of state line T35N 1698 Comment
  HSC22985  Nama aretioides John Pratt 1970-7-5 67 Lassen 1250 Comment
  CHSC65036  Nama aretioides var. californica Vernon H. Oswald; Lowell Ahart 1995-7-5 6955 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy 395. 1383 Comment
  UC133072  Nama aretioides var. multiflora Dr. Gustav Eisen 1891-1 Lassen Honey Lake Comment
  UC585170  Nama aretioides var. multiflora E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1773 Lassen Red Rock 1280 Comment
  JEPS107300  Nama densa var. densa Lowell Ahart, John Dittes 2005-6-1 11874 Lassen On the south side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 1 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.7 miles (air) northwest of Hallelujah Junction 1461 Comment
  RSA0011498  Navarretia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46974 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  RSA0011554  Navarretia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46988 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC23862  Navarretia breweri K. R. Stern 1974-6-26 5856 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, 1.8 mi nw of intersection with Hwy. 44. Comment
  CHSC29925  Navarretia breweri Robin Ondricek 1978-6-7 41 Lassen Murrers Upper Meadow, .7 mi E of intersection with main road to ELFS and tunnel crossing. 1560 Comment
  JEPS87403  Navarretia breweri Vernon H. Oswald and Lowell Ahart 1993-6-14 5517 Lassen Eagle Lake rd (Lassen A1) ca 3 mi w Eagle Lake (0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N89)) 1810 Comment
  RSA702602  Navarretia breweri L. P. Janeway 2004-6-26 8143 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UC1116681  Navarretia breweri Beecher Crampton 1961-6-20 5737 Lassen 6.5 mi n Bogard Ranger Station; Lassen National Forest, Little Harvey Valley 1676 Comment
  UC1184057  Navarretia breweri Jean Langenheim 1957-6-22 4365 Lassen Said Valley Reservoir, ne part of Lassen County Said Valley Reservoir Comment
  UC604552  Navarretia breweri C. W. Sharsmith 1938-7-18 3638 Lassen 3 mi s Termo; Madeline Plains Comment
  SJSU8608  Navarretia breweri P. L. Billings 1965-7-12 Lassen by Hwy 139 5 mi NE of Susanville 1158 Comment
  UC1137719  Navarretia divaricata L. R. Short and Wm. Gansberg 1936-7-3 S- 473 Lassen Burgess Spr. Exp. Range Lassen Forest 1844 Comment
  SEINET3894761  Navarretia intertexta Leigh A. Johnson, Haley M. Smith 2011-6-25 11 -073 Lassen Nubieber. Adjacent to New Cemetary Road (1.1 miles west of Babcokc Rd in Nubieber) just beyond its jct with Hwy 299, between Hwy and road.; 0 Comment
  JEPS121309  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2013-7-22 18869 Lassen 10 yards S of the man-made pond, about 140 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS124382  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2015-11-14 20303 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC23861  Navarretia intertexta subsp. propinqua A. W. Harvilik 1967-7-7 38 Lassen Collected on hwy. 139 ca. 6 mi from Susanville. 1463 Comment
  UCD32653  Navarretia intertexta subsp. propinqua Beecher Crampton 1954-7-5 2047 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  RSA0092313  Navarretia leptalea subsp. leptalea Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31423 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  SEINET3860229  Navarretia leucocephala subsp. leucocephala Leigh A. Johnson 2006-1 06 -147 Lassen Lassen Natl. Forest: south side of Champs Flat Road, east end of Champs flat, a little west of Dow Flat road.; 0 1693 Comment
  CHSC113072  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes 2013-7-22 18852 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS114396  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 Lassen about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  NY1012788  Navarretia leucocephala subsp. minima N. H. Holmgren 1980-7-3 9470 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  RSA702601  Navarretia leucocephala subsp. minima L. P. Janeway 2004-6-26 8145 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UC1058208  Navarretia leucocephala subsp. minima C. McMillan 1949-6-15 1542 Lassen 5 mi w Bieber Comment
  UC1112252  Navarretia leucocephala subsp. minima R. C. Bacigalupi with S. Galen Smith 1957-6-28 6002 Lassen 3.1 mi s Madeline (Highway 395); Madeline Plains 1615 Comment
  UC1191627  Navarretia leucocephala subsp. minima Verne Grant and Irving Schneider 1947-7-31 8208 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC1191630  Navarretia leucocephala subsp. minima Malcolm A. Nobs and S. Galen Smith 1949-5-29 756 Lassen Nubieber, on the Great Northern Railway Nubieber Comment
  UC1228161  Navarretia leucocephala subsp. minima Beecher Crampton 1960-6-20 5731 Lassen 0.5 mi s Black Mtn. exper. Sta. U.S.D.A. Forest Service (11 mi nw Bogard Ranger Sta); Lassen National Forest 1706 Comment
  UC908650  Navarretia leucocephala subsp. minima Lincoln Constance 1946-7-3 Lassen Madeline Station Comment
  UC107265  Nemophila parviflora var. austiniae T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  UC1609375  Nemophila pedunculata Vernon Oswald and Lowell Ahart 1993-5-12 5389 Lassen 1.6 mi se Pittsville Rd. (Hwy 44 between Poison Lake and A21 (to Westwood)); betw Poison Lake and A21 1719 Comment
  CHSC4447  Neoholmgrenia andina K. R. Stern 1967-6-24 2416 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  UC604533  Neoholmgrenia andina C. W. Sharsmith 1938-7-18 3636 Lassen three mi s Termo Comment
  CHSC116095  Nepeta cataria Lowell Ahart; John Dittes 2015-7-13 20313 Lassen Along levee road, about 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC13638  Nicotiana attenuata M. S. Taylor 1974-6-20 269 Lassen On Pelican Point, off e shore of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC5920  Nicotiana attenuata J. B. Kimsey 1946-6-17 Lassen Eagle Lake. Horse Lake. 1554 Comment
  UC1037191  Nicotiana attenuata Leo Whitney 1933-8-22 1500 Lassen base of Harvey Mountain; Lassen National Forest 1889 Comment
  HSC21264  Nicotiana attenuata R. G. Means 1962-7-4 67 Lassen 7 mi. N of Susanville, Hwy. 139 1585 Comment
  HSC42424  Nicotiana attenuata Barbara Kelly 1977-8-9 557 Lassen 20 mi. E Madeline on dirt road from Adin. 1 mi. E of 10 ton limit bridge over wash Comment
  CHSC54175  Nothocalais troximoides Vernon H. Oswald 1991-5-28 4627 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. East of the barn. 1264 Comment
  UC1609121  Nothocalais troximoides Vernon H. Oswald and Lowell Ahart 1993-6-14 5529 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (on w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd 518, 33N89), dunes on upper beach between road and lake); Eagle Lake 1566 Comment
  UC1924578  Nothocalais troximoides Debra Valov 2006-5-29 2006029 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  CAS-BOT-BC349915  Nothocalais troximoides Doris Kildale Gillespie 1930-5-13 9374 Lassen Between Susanville and Janesville Comment
  RSA0013779  Nuphar lutea subsp. polysepala E. K. Balls 1950-5-19 14787 Lassen 15.5 mi. W of Madeline on rd. from Adin. 1631 Comment
  JEPS124827 Image available Oenothera cespitosa M. L. Wheelis 1964-6-30 125 Lassen 16 miles north of Hallelujah Junction, highway 395. Comment
  UCD106858  Oenothera deltoides R. N. Raynor 1939-5-31 s.n. Lassen Milford, Honey Lake Valley. Comment
  CHSC71093  Oenothera deltoides subsp. piperi Vernon H. Oswald; Lowell Ahart 1998-5-22 9095 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. On roadside banks along this section of highway. 1255 Comment
  UC66124  Oenothera deltoides subsp. piperi P. B. Kennedy 1901-6-10 Lassen R.R. station Constantia Comment
  CHSC4767  Oenothera elata subsp. hirsutissima R. Carter 1967-7-16 621 Lassen Willow Creek Valley, E of Murrer's Ranch, 1.5 mi W of highway 139 on rd to Eagle Lake, ca. 12 mi N of Susanville, on S side of rd. Comment
  CDA36768  Onopordum acanthium D. B. Joley 1976-6-16 1 Lassen Grasshopper Lake, on Highway 139, 33 miles north of Susanville. 0 Comment
  SEINET6188292  Oreocarya schoolcraftii G. Schoolcraft 1999-7-12 2858 Lassen N. of Tuledad Canyon near NV stateline. 1737 Comment
  CAS-BOT-BC350043  Oreostemma alpigenum var. andersonii Alice Eastwood 1912-8-22 1845 Lassen Foot of Lassen Butte, Lassen Butte Region Comment
  CAS-BOT-BC350046  Oreostemma alpigenum var. andersonii John Thomas Howell 1934-7-9 12515 Lassen Bridges Creek Spring Comment
  HSC103620  Oreostemma alpigenum var. andersonii Thomas W. Nelson, Jane Nelson 1985-8-10 8015 Lassen Along north side of Silver Lake 1829 Comment
  RSA0077927  Orobanche corymbosa subsp. corymbosa Clare B. Hardham 1961-6-17 7530 Lassen Route 395 between Alturas and Susanville. Comment
  JEPS22322  Orobanche uniflora subsp. occidentalis Peter H. Raven and Otto T. Solbrig 1958-6-16 13251 Lassen 4.5 miles east of Westwood on State Highway 36. Comment
  UC1609174  Orobanche uniflora subsp. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-28 5615 Lassen N of Highway 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. Comment
  CAS-BOT-BC500271  Orobanche uniflora subsp. occidentalis H. C. Cantelow 1941-5-22 s.n. Lassen 13.5 mi W of Susanville, at Fredonyer Pass Comment
  JEPS9435  Orthocarpus cuspidatus subsp. cryptanthus Brown and Wieslander 42 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  RSA715624  Orthocarpus hispidus L. Ahart, John Dittes 2005-6-1 11902 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  HSC69075  Osmorhiza occidentalis Gary Schoolcraft 1980-7-29 342 Lassen Widow Peak Area 1585 Comment
  SD7584  Osmorhiza occidentalis Mrs. R. M. Austin 1879-1 Lassen Comment
  HSC81188  Packera cana Thomas W. Nelson, Jane P. Nelson 1980-7-6 5990 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS84965  Packera cana Barbara Ertter with Gary Schoolcraft 1987-6-16 7194 Lassen Honey Lake Skeedaddle Mountains, Hot Springs Peak (ne side, saddle on e side of peak) 2194 Comment
  UC1523736  Packera cana Gary Schoolcraft 1981-6-15 461 Lassen Ash Valley 1554 Comment
  CAS-BOT-BC316858  Packera eurycephala var. eurycephala C. C. (Mrs.) Bruce 1898-6-1 2176 Lassen Shumway Comment
  JEPS95971  Packera multilobata Vernon H. Oswald and L. Ahart 1999-6-9 9734 Lassen Hwy. 395 northeast of Susanville and north of Smoke Creek Ranch Rd. at Mud Flat: T30N R15E Sect. 3, 4425 ft elevation, dry playa surrounded by sagebrush scrub 1348 Comment
  UC1126132  Paeonia brownii A. Simontacchi 1940-6-8 834 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quadrangle Comment
  POM99648  Paeonia brownii Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  CHSC112794  Panicum Lowell Ahart; John Dittes 2013-7-23 18909 Lassen On the east side of the gravel road, north-south road west of Big Canal, 0.76 mile north of State Highway 299, 4.9 miles (air) northeast of Bieber, Big Valley. 1257 Comment
  JEPS121279  Panicum Lowell Ahart, John Dittes 2013-7-23 18909 Lassen On the E side the gravel road, N-S road W of Big Canal, 0.76 Mile N of CA 299, 4.9 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC259613  Pascopyrum smithii James Jokerst 1983-7-25 1886 Lassen Near Madeline Plains 1614 Comment
  UC773852  Pedicularis semibarbata L. R. Short, J. Warren 1936-6-9 S 410 Lassen Burgess Spring Experiment Range Lassen National Forest 1859 Comment
  UC62506  Pellaea Baker and Nutting 1894-5-25 Lassen Pine Creek Comment
  SBBG85835  Penstemon deustus F. W. Pennell 1940-6-9 25768 Lassen below basaltic ridge, hill W of Susanville 1371 Comment
  HSC68837  Penstemon deustus Gary Schoolcraft 1979-6-26 97 Lassen Small peak N of Radeo Flat 1951 Comment
  SD77352  Penstemon deustus Francis W. Pennell 1940-6-7 25722 Lassen Route 299, 11 miles west of Nubieber 1096 Comment
  RSA715656  Penstemon deustus subsp. heterander L. Ahart, John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Rd. and Highway 70, 5.7 mi. (air) northwest of Halleluiah Junction. 1411 Comment
  POM195126  Penstemon deustus subsp. sudans D. D. Keck 1930-7-23 948 Lassen Susanville. 1280 Comment
  RSA177476  Penstemon deustus subsp. sudans R. M. Straw 1962-6-29 2198 Lassen 10 miles W of Susanville on Cal 36. 1580 Comment
  UC477496  Penstemon deustus var. pedicellatus A. G. Brenneis 1928-7-3 12 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 Comment
  RSA165523  Penstemon deustus var. pedicellatus Clare B. Hardham 1961-6-17 7532 Lassen Rte. 395 between Lassen and Alturas. Comment
  CHSC62007  Penstemon gracilentus Eenam Sin 1992-6-3 26 Lassen North east corner at the base of Gallatin Peak. 1524 Comment
  UC1137680  Penstemon gracilentus George A. Fischer, Irwin H. Johnson 1933-7-14 F 254 Lassen Lassen National Forest 1783 Comment
  UC1583940  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen e slope of Tule Mtn. 1767 Comment
  UC1874751  Penstemon gracilentus Karl Vincent, Charlotte Labbe 1986-7-19 4382 Lassen Sierra Nevada, Roop Mtn.; Alng CA A1 at Eagle Lake Summit, ca. 7.6 mi N of jct. CA 36, ca 7 air mi NW of Susanville. 1932 Comment
  SEINET10547576  Penstemon heterodoxus var. shastensis Mary Merello 1993-6-27 Merello 742 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. 1700 Comment
  NY604216  Penstemon janishiae G. L. Stebbins 1937-7-10 2282 Lassen Summit and east slope of Diamond Mountain 2194.6 Comment
  SEINET5329198 Image available Penstemon neotericus C. G. Gulling 1905-1 1543 Lassen Big Meadows Comment
  HSC93439  Penstemon neotericus Vernon H. Oswald, L. Ahart 1996-8-1 8118 Lassen Junction of FS Rd. 28N56 (D-Line) and the spur road to Indian Ole Dam on Mtn. Meadows Reservoir, SW of Westwood 1537 Comment
  NY627251  Penstemon neotericus K. A. Vincent 1986-7-19 4381 Lassen Sierra Nevada, Roop Mountain; along CA A1 ca. 4 miles northwest of jct. CA 36, site ca. 6 air miles west-northwest of Susanville 1737.4 Comment
  POM147859  Penstemon neotericus J. B. Feudge 1927-7-20 1768 Lassen Westwood. Comment
  SBBG28997  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen E of Westwood 1493 Comment
  CAS-BOT-BC239221  Penstemon newberryi var. berryi Clare B. Hardham 1969-8-28 17449 Lassen West of Janesville Comment
  CAS-BOT-BC383112  Penstemon newberryi var. newberryi Andrew Townesmith; Karen M. Meyer 2007-7-22 843 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10 1980 Comment
  SEINET5323576 Image available Penstemon procerus var. procerus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC4912  Penstemon roezlii A. E. Anderson 1967-6-24 27 Lassen Abundant in soil on roadside leading to Murrer's Meadow, 1 mi. east of junction of road to Eagle Lake Biological Station. 1554 Comment
  CHSC66407  Penstemon roezlii Vernon H. Oswald; Lowell Ahart 1996-6-17 7785 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Scattered plants along the trail on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  NY641730  Penstemon roezlii R. G. Olmstead 1984-6-27 582 Lassen 10.3 miles east from U.S. 395 pm Rye Patch Canyon road. 1603.3 Comment
  NY650129  Penstemon roezlii D. D. Keck 1930-7-23 954 Lassen 12 miles west of Susanville 1676.4 Comment
  POM268103  Penstemon roezlii H. C. Cantelow 1941-5-22 s.n. Lassen North of Litchfield, US Hwy 395. Comment
  SEINET201571  Penstemon roezlii A. Cronquist, AH Holmgren 1959-6-18 8483 Lassen 5 mi S of Adin Comment
  UC423646  Penstemon roezlii David D. Keck 1930-7-23 954 Lassen 12 mi w Susanville; Sierra Nevada 1675 Comment
  SEINET5329596 Image available Penstemon roezlii J. T. Howell, Gordon H. True; Wayne Dakan 1974-7-30 50689 Lassen S and SE of Diamond Mt., 2286 Comment
  SEINET12320798  Penstemon rydbergii M. S. Taylor 1974-1 287 Lassen ca 2 mi E of Gallatin Beach, ca 1/2 mi S of Eagle Lake, ca 13 mi NW of Susanville 1524 Comment
  CAS-BOT-BC239497  Penstemon rydbergii var. oreocharis Louella Bass 1973-5-29 EV 50 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC239501  Penstemon rydbergii var. oreocharis Robert W. Gardner 1937-6-20 G - 19 Lassen Lassen National Forest, Burgess Spring 1699 Comment
  CAS-BOT-BC239507  Penstemon rydbergii var. oreocharis John Thomas Howell 1934-7-7 12460 Lassen Bogard Ranger Station Comment
  CHSC59826  Penstemon rydbergii var. oreocharis Mary Meyer 1980-7-9 Lassen In dry meadows 1 mi northwest of Horse Camp Spring. 1706 Comment
  HSC81544  Penstemon rydbergii var. oreocharis Thomas W. Nelson, Jane Nelson 1980-7-6 6046 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CHSC23549  Penstemon speciosus W. O. Baum 1971-6-28 25 Lassen S. slope of Gallatin Peak. 2042 Comment
  JEPS101465  Penstemon speciosus Dean W. Taylor 1974-6-14 3721 Lassen Janesville Grade road about 4 miles SSW Janesville, Plumas National Forest 1706 Comment
  JEPS89101  Penstemon speciosus Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  JEPS95972  Penstemon speciosus Vernon H. Oswald and L. Ahart 1999-6-9 9747 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate 1353 Comment
  NY660809  Penstemon speciosus N. H. Holmgren 1980-7-5 9518 Lassen Upper Smoke Creek drainage, 14.8 km (9.2 miles) east of U.S. Highway 395 via Rye Patch Canyon, 19 km (12 miles) airline distance east-southeast of Ravendale. 1680 Comment
  POM44889  Penstemon speciosus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC423512  Penstemon speciosus David D. Keck 1930-7-23 947 Lassen Reno Junction Sierra Nevada, Reno Junction (southeastern Lassen County) 1493 Comment
  UC54978  Penstemon speciosus Jos. Burtt Davy Lassen Amedee Comment
  NY660841  Penstemon speciosus F. W. Pennell 1940-7-23 26254 Lassen Route 395, 2 miles north of junction with route #24, northeast of Plumas 1524.0 Comment
  RSA305777  Penstemon speciosus James R. Shevock 1972-5-20 1815 Lassen Near Ravendale, Hwy 395. 1220 Comment
  RSA38458  Penstemon speciosus Philip A. Munz 1947-5-19 11877 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  CAS-BOT-BC243408  Penstemon sudans David D. Keck 1930-7-23 953 Lassen Four miles west of Susanville, Sierra Nevada 1463 Comment
  CAS-BOT-BC243413  Penstemon sudans Alice Eastwood; John Thomas Howell 1940-6-15 8327 Lassen Round Valley Comment
  JEPS94561  Penstemon sudans Vernon Oswald and Lowell Ahart 1997-6-24 8599 Lassen on Forest Rd. 29N43 1.2 mi e Gold Run Rd. (29N10) (n side of mt., s of Susanville); Diamond Mtn. 1685 Comment
  NY661798  Penstemon sudans F. W. Pennell 1940-6-9 25768 Lassen Route 36. Hill, west of Susanville 1371.6 Comment
  NY661803  Penstemon sudans N. H. Holmgren 1978-6-12 8937 Lassen Rye Patch Canyon, 4.3 km (2.7 miles) east of U.S. Highway 395, just above Ramhorn Campground, 14.5 km (9 miles) airline distance southeast of Ravendale. 1740 Comment
  RSA299501  Penstemon sudans J. T. Howell 1977-6-22 s.n. Lassen West of Susanville, near the confluence of Willard Creek and Susan River 1433 Comment
  UC886952  Penstemon sudans A. A. Heller 1938-6-22 15194 Lassen on Highway #36 on a stony slope e Fredonyer Pass; e of Fredonyer Pass 1645 Comment
  CHSC65998  Peraphyllum ramosissimum Vernon H. Oswald; Gary Schoolcraft 1996-5-11 7551 Lassen Modoc Plateau. Slope along the road to the pteroglyphs on the rim of Willow Creek N of Belfast (ca. 12 mi ENE of Susanville). 1280 Comment
  CAS-BOT-BC211251  Perideridia Louella Bass 1976-1-1 158 Lassen Elysian Valley Comment
  CHSC85820  Perideridia bolanderi subsp. bolanderi David French 1968-6-2 2881 Lassen Near State Hwy. 36, 13.8 mi E of Westwood, 5.1 mi E of Fredonyer Pass; roughly 8 mi W of Susanville. Comment
  POM82581  Perideridia bolanderi subsp. bolanderi Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  RSA0092314  Perideridia bolanderi subsp. bolanderi Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31422 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  UC1137777  Perideridia bolanderi subsp. bolanderi George A. Fischer and Irwin H. Johnson 1933-7-12 F 210 Lassen Grass Valley Lassen National Forest 1722 Comment
  HSC73083  Perideridia gairdneri subsp. gairdneri Cindy Prouty 1978-7-11 19 Lassen Papoose Creek, S of Gallatin 1585 Comment
  CHSC6229  Persicaria amphibia J. B. Kimsey 1946-6-24 Lassen Pine Creek, Eagle Lake. 1584 Comment
  CAS-BOT-BC413523  Persicaria amphibia John Thomas Howell 1975-7-23 51405 Lassen Along Hwy. 395 between Johnstonville and Janesville 1280 Comment
  CHSC77223  Persicaria lapathifolia G. Schoolcraft 1996-9-11 2560 Lassen Lower end of Willow Creek below petroglyphs and above dam. 1341 Comment
  HSC28828  Phacelia adenophora D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19305 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS27119  Phacelia adenophora Lauramay T. Dempster 1961-6-17 1678 Lassen about 8 mi n Karlo road junction with Hwy. 395 1584 Comment
  JEPS79216  Phacelia adenophora L. R. Heckard with R. C. Bacigalupi 1980-6-11 5264 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield, flat area and wash between railroad and hwy) 1463 Comment
  OBI48096  Phacelia adenophora Rhonda Riggins 1989-4-27 1643 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  RSA293371  Phacelia adenophora Reino Alava 1957-7-5 1136 Lassen 4.8 miles south of Ravendale on Highway 395. Comment
  UC1226488  Phacelia adenophora Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8479 Lassen along roadside 1 mi s Ravendale (40 mi ne of Susanville) 1615 Comment
  UC1401312  Phacelia adenophora D. B. Dunn 1956-7-3 11917 Lassen on hwy 395 31 mi ne Johnstonville (n side of flats) Comment
  UC726890  Phacelia adenophora A. A. Heller 1938-6-23 15210 Lassen along Hwy 395 about midway between Mapes and Secret Valley 1371 Comment
  SEINET12332924  Phacelia adenophora A. Tiehm, Nachlinger, J.; Williams, M. 1988-1 11701 Lassen S side of Shaffer Mt., 3.4 road mi N of the Wendel road on Hwy 395 from Susanville to Alturas Comment
  RSA22955  Phacelia bicolor Elmer I. Applegate 1934-5-4 8928 Lassen South of Secret Valley. Comment
  JEPS29745  Phacelia bicolor var. bicolor Rimo Bacigalupi and L. R. Heckard 1962-5-28 8500 Lassen junction of cut-off road to Standish and Litchfield (Lassen Co. A3) with U.S. highway 395 1219 Comment
  UC107370  Phacelia bicolor var. bicolor T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC48469  Phacelia glandulifera Vernon Oswald 1986-5-28 2056 Lassen Road 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  UC1609410  Phacelia glandulifera Vernon H. Oswald and Lowell Ahart 1993-6-14 5541 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd 518, 33N89), n side of rd); Eagle Lake 1566 Comment
  CDA40418  Phacelia hastata J. T. Howell 1934-7-8 12480 Lassen Champ s Flat. 0 Comment
  UCD120478  Phacelia hastata John Thomas Howell 1934-7-8 12480 Lassen Champ's Flat. Comment
  RSA0093392  Phacelia hastata var. hastata Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31421 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  CHSC93673  Phacelia heterophylla subsp. virgata Lowell Ahart; John Dittes 2005-6-2 11983 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  RSA715987  Phacelia heterophylla subsp. virgata L. Ahart, John Dittes 2005-6-2 11952 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4.75 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction 1513 Comment
  POM73331  Phacelia heterophylla subsp. virgata Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  SJSU14069  Phacelia heterophylla subsp. virgata W. Savage 1964-6-30 335 Lassen E of Susanville 1310 Comment
  CHSC4910  Phacelia humilis A. E. Anderson 1967-6-23 5 Lassen Around Eagle Lake Biological Station. 1554 Comment
  SEINET12765228  Phacelia humilis Vernon H. Oswald, Lowell Ahart 1997-6-24 8620 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. at a impoundment on Forest Rd. 29N43, ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary.; 0 2036 Comment
  SEINET5536709  Phacelia humilis N. H. Holmgren, P. K. Holmgren 1978-6-11 8908 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance. 1680 Comment
  UC773945  Phacelia humilis L. R. Short 1936-5-22 S- 351 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1836 Comment
  RSA122630  Phacelia humilis var. humilis L. R. Short 1936-5-22 S- 351 Lassen Burgess Spr. Exp. Range. 1837 Comment
  POM73344  Phacelia humilis var. humilis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  CHSC58500  Phacelia hydrophylloides Vernon H. Oswald 1992-7-3 5060 Lassen Lassen Volcanic National Park. Trail between Juniper and Horseshoe lakes, on the W side of the ridge between the lakes. 2078 Comment
  CHSC106571  Phacelia linearis Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC23708  Phacelia linearis R. Smallwood 1970-6-20 120 Lassen Eagle Lake Biol. Station. 5 yds e of Shepherd's Hall. Comment
  NY998460  Phacelia linearis W. W. Eggleston 1911-5-29 6721 Lassen Vicinity of Doyle Station 1290 Comment
  NY998462  Phacelia linearis N. H. Holmgren 1980-7-4 9501 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 Comment
  POM203782  Phacelia linearis J. T. Howell 1934-6-10 11901 Lassen 3 miles S of Ravendale. Comment
  RSA428037  Phacelia linearis Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CHSC111256  Phacelia mutabilis L. P. Janeway; B. Castro 2012-7-3 10939 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  OBI82828  Phacelia ramosissima var. eremophila Robert L. Johnson, Mikel R. Stevens 2015-7-10 3931 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  SEINET7926036  Phacelia ramosissima var. eremophila Robert L. Johnson, Mikel R. Stevens 2015-7-10 3931 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  HSC93434  Phalaris arundinacea Vernon H. Oswald, L. Ahart 1996-8-1 8108 Lassen Mtn. Meadows Reservoir SW of Westwood 1540 Comment
  UC60737  Phleum alpinum M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC1191212  Phlox diffusa Lloyd Swift 1928-5-23 Lassen Bassi Hell Hole Lassen National Forest Comment
  CHSC54189  Phlox hoodii subsp. canescens Vernon H. Oswald 1991-5-28 4626 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  JEPS69990  Phlox speciosa subsp. occidentalis Leland S. Smith 1918-5-12 922 Lassen Hayden Hill, s end of Modoc National Forest Modoc National Forest Comment
  UC23964  Phlox speciosa subsp. occidentalis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mts. Comment
  NY963725  Phlox speciosa var. nitida H. D. D. Ripley 1944-5-29 5955 Lassen South of Janesville 1280 Comment
  CHSC26429  Phlox stansburyi Gary McGrath 1977-4-24 2 Lassen Ca. 20 m w of Hwy 139, 3 km n of Susanville. 1310 Comment
  UC23951  Phlox stansburyi Mrs. C. C. Bruce Jun 1898 2332 Lassen Madeline Plains Comment
  CHSC60669  Phoenicaulis cheiranthoides Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5272 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  CHSC117545  Phoradendron bolleanum Lowell Ahart; John Dittes 2016-7-13 21136 Lassen 5 yards south of the gate to the pond, along Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1748284  Phoradendron densum L. P. Janeway, B. Castro, and Loren Gehrung 1999-10-10 6595 A Lassen at Cypress Trailhead into Thousand Lakes Wilderness Area, near Eiler Creek between Fraener Peak and Horse Heaven Buttes High Cascade Range 1639 Comment
  UC74048  Picrothamnus desertorum J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  UCD133167  Pinus contorta subsp. murrayana Beecher Crampton 1960-6-21 5743 Lassen Gurnsey Creek. 3.5 miles E of Child's Meadow, along State Hwy. 36. 1463 Comment
  CAS-BOT-BC80047  Pinus washoensis John Thomas Howell 1969-8-7 45886 Lassen Between Butte Lake and Cinder Cone Comment
  CHSC29914  Plagiobothrys cognatus Robin L. Ondricek 1978-7-5 85 Lassen Grassy area bordering ne edge of Mahogany Lake. 2057 Comment
  CDA42913  Plagiobothrys cusickii L. Ahart, John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC110913  Plagiobothrys cusickii Lowell Ahart; John Dittes 2012-7-9 18284 A Lassen Along a very small drainage, about 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC224968  Plagiobothrys hispidulus J. Burtt Davy 1897-6-17 3360 Lassen Adobe Meadows, Honey Lake Valley Comment
  CAS-BOT-BC224974  Plagiobothrys hispidulus John Thomas Howell; Gordon H. True 1973-8-1 50212 Lassen Headwaters of Baxter Creek, E slope of Diamond Range S of Susanville 2164 Comment
  CAS-BOT-BC228221  Plagiobothrys hispidulus John Thomas Howell 1934-6-14 12126 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  CHSC60334  Plagiobothrys hispidulus Mary Ann Showers 1992-6-12 2530 a Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  CHSC60726  Plagiobothrys hispidulus Vernon H. Oswald; Lowell Ahart 1993-6-14 5510 Lassen Junction of Lassen A1 (Eagle Lake Rd.) with Lassen A21 (32N02), ca. 3 mi (air) W of Eagle Lake. Roadside depression. 1813 Comment
  JEPS87509  Plagiobothrys hispidulus Vernon H. Oswald and Lowell Ahart 1993-6-14 5510 Lassen ca 3 mi (air) w. Eagle Lake (junction of Lassen A1 (Eagle Creek Rd.) with Lassen A21 (32N02)) 1813 Comment
  CAS-BOT-BC224970  Plagiobothrys hispidulus David D. Keck; J. Clausen 1935-6-25 3764 Lassen 2 miles W of Fredonyer Pass, between Susanville and Westwood 1525 Comment
  SJSU8065  Plagiobothrys hispidus J. W. Tilden 1960-6-27 1495 Lassen Westwood 1524 Comment
  UC1561381  Plagiobothrys hispidus Barbara Ertter with Gary Schoolcraft 1987-6-16 7190 Lassen on s side Hot Springs VABM (on ne side of Honey Lake); Skeedaddle Mountains, Honey Lake 2286 Comment
  UC1618198  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy. 44 ca. 1 mi. e. Shasta Co. line (s. of hwy.) 1645 Comment
  UC25081  Plagiobothrys hispidus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC64768  Plagiobothrys leptocladus Vernon H. Oswald 1995-5-24 6780 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the e side of the road ca. 0.2 mi n of the railroad. 1219 Comment
  UC614658  Plagiobothrys leptocladus L. Constance 1938-6-11 2330 Lassen slightly alkaline overflow of the Susan River at Litchfield; Susan River, Litchfield 1219 Comment
  CHSC116091  Plagiobothrys mollis var. mollis Lowell Ahart; John Dittes 2015-7-13 20306 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA715627  Plagiobothrys scouleri var. cusickii L. Ahart, John Dittes 2005-6-1 11906 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  RSA0105588  Plagiobothrys stipitatus var. micranthus Lowell Ahart, John Dittes 2013-7-22 18873 Lassen 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS90082  Plagiobothrys tenellus Dean Wm. Taylor with Robert A. Price 1988-6-4 9766 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. watershed, Fall R. Valley 1036 Comment
  UCD55159  Plagiobothrys tenellus Ellen Dean 2006-5-15 3047 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  JEPS124568 Image available Plagiobothrys tener Dixie Funnell 1965-7-13 144 Lassen 4.2 miles west of Dead Horse Summit. HW 89. Comment
  HSC95284  Platanthera dilatata var. leucostachys Gordon Leppig 1998-7-12 941 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95289  Platanthera dilatata var. leucostachys Gordon Leppig, J. Cromwell 1997-7-26 602 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC30564  Platanthera leucostachys Sori H. Shad 1970-6-19 21 Lassen Above and east of Galatin Beach. 1524 Comment
  CHSC96724  Platanthera leucostachys Gordon Leppig 1998-7-12 941 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  UC726205  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen 2 mi e Westwood 1524 Comment
  POM107756  Platanthera leucostachys Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CHSC117208  Plectritis macrocera Lowell Ahart; John Dittes 2016-6-7 21005 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC7742  Plectritis macrocera Beverly J. Wise 1969-4-10 118 Lassen 2.8 mi. north of Susanville on Shasta Forest logging Rd #7-off Hwy 139. 1341 Comment
  SEINET780337  Plectritis macrocera B. J. Cox, D. B. Dunn 1971-6-2 3116 Lassen Six miles N of Halleujah jct. on U.S. Hwy. 395, in Artemesia tridentata. 1402 Comment
  CAS-BOT-BC326710  Pleiacanthus spinosus John Thomas Howell 1961-9-25 36971 Lassen East side of Beckwourth Pass, Sierra Nevada 1554 Comment
  UC1031352  Poa Leo Whitney 1935-6-26 3367 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  CAS-BOT-BC255679  Poa bolanderi Clare B. Hardham 1971-8-22 18912 Lassen Diamond Mountain 2133 Comment
  JEPS114748  Poa bulbosa Lowell Ahart, John Dittes 2008-6-22 15035 Lassen About 220 yards west of the road levee, on the banks of a small natural drainage, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  SACT001821  Poa bulbosa Herbert Mason 1949-5-29 Lassen Highway 299. In marsh. Comment
  UC1100399  Poa bulbosa Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 758 Lassen on Great Northern RR, Hwy 299 <Nubeiber> Comment
  UCD90624  Poa bulbosa Beecher Crampton 1964-6-27 7096 Lassen ca. 8 miles southeast of Ravendale Bureau Land Management Spanish Springs--Shinn Mtns. Resource Conservation area. 1981 Comment
  UCR119183  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen Warner Mountains, 6 miles southeast of Jess Valley, 3 miles east of Blue Lake. Southern edge of mountains. 2134 Comment
  JEPS118453  Poa cusickii subsp. epilis Lowell Ahart, John Dittes 2011-6-20 17507 Lassen Meadow about 40 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC2046021  Poa pratensis Barbara L. Wilson with Danna Lytjen and Nick Otting 2005-7-29 11508 Lassen Blue Door Flat, seven or eight miles east of Highway 295 on county road 510. Comment
  SEINET10523388  Poa pratensis Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3113 Lassen 6 mi N of Hallelujah Jct. on US Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  JEPS107465  Poa pratensis subsp. pratensis Lowell Ahart, John Dittes 2005-6-1 11848 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1037135  Poa pratensis subsp. pratensis Leo Whitney 1935-5-27 3126 Lassen Bieber Comment
  CAS-BOT-BC255025  Poa secunda Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16337 Lassen 13.5 miles E of Susanville Comment
  JEPS126492  Poa secunda Jennifer Mueller, A. Brambila July 6-15, 2016 CA 370 -227 Lassen Head south through Eagleville, CA to Bare Ranch. Comment
  JEPS128168  Poa secunda M. C. Mahoney, J. A. Nash 2017-7-12 CA 350 -82 Lassen On Mt. Schaffer. From Susanville take A27 east. Turn left on Belfast Road. Continue for 5 miles and turn right onto a dirt road. Follow for two miles until it dead ends at Balls Canyon. Population is on he east side of the canyon on Mt. Schaffer. Comment
  UCR119165  Poa secunda Beecher Crampton 1954-7-5 2057 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  SEINET10966852  Poa secunda Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2602 Lassen Hallelujah Jct. intersection of US Hwy 395 & CA Hwy 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  CAS-BOT-BC237715  Poa secunda subsp. juncifolia J. B. Davy 1897-6-1 3319 Lassen Honey Lake Valley Comment
  JEPS70648  Poa secunda subsp. juncifolia Dr. Longbridge 1912-1 Lassen Amadee Comment
  UC1132872  Poa secunda subsp. juncifolia A. Simontacchi 1940-5-13 704 Lassen 2.2 mi n of B. M. 6680 on Cone Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UCD92148  Poa secunda subsp. juncifolia Collector Unknown 1935-6-27 s.n. Lassen Squaw Valley. Comment
  UCD92157  Poa secunda subsp. juncifolia A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3370 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  UCD92368  Poa secunda subsp. juncifolia J. B. Davy 17-24 Jun 1897 s.n. Lassen Honey Lake Valley. Comment
  UCD92396  Poa secunda subsp. juncifolia A. H. Shunk 1923-7-28 s.n. Lassen Madeline. Comment
  UCD92428  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-26 3370 Lassen Lassen National Forest. Near Fruit Grower's Supply Co., Camp 10. Comment
  CAS-BOT-BC236177  Poa secunda subsp. secunda Doris Kildale Gillespie 1930-5-14 9379 Lassen Fredonia Pass near Susanville Comment
  UC1132871  Poa secunda subsp. secunda A. Simontacchi 1940-5-28 784 Lassen 3.2 mi wsw Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1136989  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 219 Lassen 1 1/2 mi e Hall's Flat Ranger Station; Lassen Nat'l Forest 1722 Comment
  UC1136990  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 F 206 Lassen Grass Valley; Lassen Nat'l Forest 1699 Comment
  UCD91653  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True, Margaret Williams 1973-5-12 49196 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CHSC54190  Polemonium micranthum Vernon H. Oswald 1991-5-28 4615 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Are, ca. 5 miles northeast of Bieber. 1264 Comment
  CDA40272  Polemonium micranthum Lee Wheeler 1960-4-13 3941 Lassen At the fairgrounds, Susanville. 0 Comment
  SDSU3228  Polemonium occidentale D. F. Howe 1964-8-2 3918 Lassen East Creek, Warner Mtns., Modoc National Forest 2012 Comment
  CAS-BOT-BC74168  Polyctenium fremontii James Jokerst 1983-5-31 1786 Lassen Grasshopper Valley. 1583 Comment
  SEINET5326411  Polyctenium williamsiae G. Schoolcraft 1998-5-19 2707 Lassen S. end Mud Flat. 1341 Comment
  JEPS50529  Polygonum amphibium var. emersum W. L. Jepson 7997 a Lassen Grasshopper Valley 1615 Comment
  UC1192333  Polygonum amphibium var. emersum Verne Grant and Irving Schneider 1947-7-30 8192 Lassen Tule Lake; s point of w embayment Comment
  UC1536797  Polygonum amphibium var. emersum Gordon H. True Jr. 1939-7-6 1038 Lassen George Bailey Ranch Honey Lake Valley Comment
  CAS-BOT-BC419769  Polygonum argyrocoleon G. Schoolcraft 1989-6-19 1919 Lassen Ash Valley RNA/ACEC. Comment
  CHSC117541  Polygonum aviculare Lowell Ahart; John Dittes 2016-7-13 21133 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC59094  Polygonum aviculare Vernon H. Oswald; Lowell Ahart 1992-8-25 5191 Lassen Lassen Volcanic National Park. West shore of Snag Lake SW of the islands. Locally common in wet, muddy volcanic gravel on the drying strand of the lake. 1851 Comment
  CAS-BOT-BC414305  Polygonum aviculare subsp. neglectum M. S. Taylor 1982-8-19 5021 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallalujah [Hallelujah] Junction 1493 Comment
  UC1536794  Polygonum bistortoides Gordon H. True Jr. 1939-6-15 1036 Lassen w Grasshopper Valley; Bullard Lake Comment
  UC1137781  Polygonum douglasii subsp. spergulariiforme August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn. Headquarters; Lassen National Forest 1706 Comment
  UC1143031  Polygonum douglasii subsp. spergulariiforme L. R. Short 1936-9-30 S- 501 Lassen Burgess Spring Experimental Range Lassen National Forest 1767 Comment
  JEPS28705  Polygonum minimum George W. Gillett 1957-7-28 931 Lassen draw 1 mi above Butte Lake (on Widow Lake Trail); Lassen Volcanic National Park 1905 Comment
  JEPS50618  Polygonum persicaria W. L. Jepson 1939-8-11 19377 Lassen Milford 1280 Comment
  UC1603214  Polygonum polygaloides J. Guardino 1993-6-9 281 A Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  JEPS28647  Polygonum polygaloides subsp. confertiflorum George W. Gillett 1957-7-22 874 Lassen near s shore of Snag Lake, Lassen Volcanic National Park Snag Lake Snag Lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  JEPS96123  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1996-6-24 7856 Lassen ca. 0.5 mi e Eagle Lake Rd. (A1) (2.5 mi s of Eagle Lake, ca. 0.3 mi s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  POM312907  Polygonum polygaloides subsp. confertiflorum S. Galen Smith, H. L. Mason, Malcom A. Nobs 1949-5-29 757 Lassen Marsh, on Great Northern Railroad, Hwy 299, Nubeiber Comment
  UC1112251  Polygonum polygaloides subsp. confertiflorum R. C. Bacigalupi with S. Galen Smith 1957-6-28 6003 Lassen ditch along Hwy 395 3.1 mi s Madeline; Madeline Plains 1615 Comment
  UC1594529  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1992-7-16 5104 a Lassen on s side of Hwy 44 1.2 mi se County Rd. A21 (between Old Station and Susanville); Long Lake 1745 Comment
  JEPS97417  Polygonum ramosissimum Vernon H. Oswald and L. Ahart 1995-6-19 6880 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  UC773924  Polygonum sawatchense subsp. oblivium L. R. Short 1936-5-22 S- 352 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1836 Comment
  JEPS88215  Polygonum sawatchense subsp. sawatchense Vernon H. Oswald and Lowell Ahart 1996-6-24 7864 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd.(A1), on w. side of the meadow ca. 0.4 mi. s. of the cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  CDA22787  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. Comment
  CAS-BOT-BC232547  Polypogon monspeliensis Louella Bass 1982-6-20 s.n. Lassen 0.5 mile W of Karlo Comment
  RSA129377  Polypogon monspeliensis H. S. Yates 1936-8-11 6054 Lassen Near Red Rock. 1341 Comment
  CHSC27641  Porterella carnosula George Deniso 1978-7-21 94 Lassen S end of Mohogany L., S of Eagle L. 2060 Comment
  OBI75891  Porterella carnosula Anthony Baniaga and D. Lepley, D. Lepley 2011-8-17 502 Lassen Lassen Natl Forest. Unnamed ephemeral pool, E of Silver Bowl Camp. Bogard Buttes quad. T31N R7E sec 35 SW of SE 1905 Comment
  SEINET10460824  Porterella carnosula Peter H. Raven 1958-6-17 Raven 13294 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline Comment
  SEINET10460825  Porterella carnosula Secrest 1951-6-23 SECREST s.n. Lassen Comment
  SEINET10460844  Porterella carnosula Baker 1894-7-21 Baker s.n. Lassen Near Eagle Lake. 1524 Comment
  CHSC65368  Potamogeton amplifolius Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7218 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. Along the W shore of the lake. 1859 Comment
  UC1099904  Potamogeton amplifolius Verne Grant, Irving Schneider 1947-8-24 8269 Lassen nw shore of Blue Lake (northern Lassen County) Comment
  CHSC4840  Potamogeton filiformis R. Carter 1967-7-13 594 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  UC1099866  Potamogeton foliosus Verne Grant, Irving Schneider 1947-7-29 8181 Lassen 1 mi e (upstream) of Tule Lake; Cedar Creek Comment
  UCR196279  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 mi south of Bieber in Big Valley. Robin Harbert's wild rice field 1280 Comment
  SEINET10704662  Potamogeton natans Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 146 Lassen Lassen National Forest. 1.3 mi. on Road 10 to Silver Lake off Road 110. 1963 Comment
  UC2046022  Potamogeton natans Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting 2004-8-24 11167 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. Comment
  UCD170231  Potamogeton natans K. M. Meyer; A. Townesmith 2007-7-21 146 Lassen Lassen National Forest. 1.3 mile on Road 10 to Silver Lake off Road 110. 1963 Comment
  CAS-BOT-BC453914  Potamogeton pectinatus Verne Grant; Irving Schneider 1947-9-6 8380 Lassen North arm of Eagle Lake Comment
  CAS-BOT-BC454091  Potamogeton pusillus subsp. tenuissimus Verne Grant; Irving Schneider 1947-7-31 8212 Lassen Northeast quarter of George Williams section 19, Madeline Plain Comment
  CHSC55814  Potamogeton richardsonii Vernon H. Oswald 1991-9-23 4876 Lassen Lassen Volcanic National Park. Butte Lake in the northeast corner of the park. At the first spit of land extending into the lake south of its outlet. 1841 Comment
  UC60850  Potamogeton zosteriformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3356 Lassen near Amedee; Honey Lake Valley Comment
  POM366534  Potentilla glandulosa subsp. ashlandica Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC146438  Potentilla gracilis var. elmeri J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  CAS-BOT-BC540361  Potentilla gracilis var. fastigiata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49453 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC540367  Potentilla gracilis var. fastigiata David D. Keck 1930-7-23 956 b Lassen 3 miles east of Westwood 1524 Comment
  CAS-BOT-BC158516  Potentilla millefolia 1927-6-10 7 Lassen Lassen National Forest, Norval Flat 1747 Comment
  CAS-BOT-BC159779  Prunus andersonii James Moffitt 1934-6-27 147 Lassen Near Milford Comment
  CHSC1581  Prunus andersonii D. Heinz 1962-4-23 Lassen Hallelujah Jct. at State line. 1371 Comment
  CHSC71098  Prunus andersonii Vernon H. Oswald; Lowell Ahart 1998-5-22 9119 Lassen Road to ORV parking area in Fort Sage Mtns. 1.1 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1447 Comment
  HSC101096  Prunus andersonii C. Dow, D. Garrison 2008-5-3 Lassen OHV Trailhead and Trail to Indian Springs 1439 Comment
  OBI77048  Prunus andersonii Anthony Baniaga 2011-7-1 412 Lassen Ownership unk. E of Doyle, alongrd to Fort Sage Mts. 1288 Comment
  CHSC23560  Prunus virginiana var. demissa W. O. Baum 1971-7-6 34 Lassen At top of s slope on Gallatin Peak. 2103 Comment
  CHSC66398  Prunus virginiana var. demissa Vernon H. Oswald; Lowell Ahart 1996-6-17 7767 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  CHSC67065  Prunus virginiana var. demissa Willis Ball 1969-6-25 28 Lassen Found on the edge of Upper Murrer's Meadow. 1584 Comment
  JEPS107870  Prunus virginiana var. demissa Lowell Ahart, John Dittes 2005-6-2 11931 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  UCD113534  Prunus virginiana var. demissa W. Robert Powell 1985-7-30 3080 c Lassen about 3 miles WNW of Susanville on narrow flood plane of Piute Creek. 1402 Comment
  UCD91491  Pseudoroegneria spicata A. A. Beetle 1944-8-16 3018 Lassen On east side of Horse Lake. Comment
  POM112808  Pseudoroegneria spicata subsp. spicata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC188856  Pseudoroegneria spicata subsp. spicata Milo S. Baker Lassen s side of Dixie Valley Dixie Valley Comment
  CHSC67079  Pseudostellaria jamesiana Jeanne Boze 1981-6-13 116 Lassen On northeast slope of Galletin Peak. 1981 Comment
  JEPS48629  Pseudostellaria jamesiana Hilda W. Grinnell 1934-6-1 Lassen top of divide 8 mi sw Susanville 1950 Comment
  UCD135122  Pseudotsuga menziesii var. menziesii John Thomas Howell; Gordon H. True 1973-6-28 49409 Lassen Sierra Nevada, Elysian Valley, west of Janesville. 1310 Comment
  UC1924240  Psilocarphus brevissimus Debra Valov 2004-6-8 2004244 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC361753  Psilocarphus brevissimus var. brevissimus John Thomas Howell 1934-7-10 12541 Lassen Patterson Flats Comment
  JEPS114630  Psilocarphus tenellus var. tenellus Lowell Ahart, John Dittes 2008-6-22 15029 Lassen About 120 yards west of the road levee, on the bottom of a small natural drainage, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  CAS-BOT-BC239824  Puccinellia lemmonii James Jokerst 1983-7-24 1884 Lassen Near Madeline Plains 1614 Comment
  JEPS103194  Puccinellia lemmonii G. Schoolcraft 2000-6-19 2906 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  UCD92258  Puccinellia simplex Leo Whitney 1935-3-2 3012 Lassen Rosamond Lake, Mohave Desert. Comment
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Apr 29 2013
  CHSC25129  Purshia tridentata Paul Lyman 1970-5-2 29 Lassen Bald Mountain; Janesville. On south slope of Bald Mountain, 10 miles East of Susanville. Comment
  CAS-BOT-BC147820  Purshia tridentata var. tridentata R. F. Thorne; C. W. Tilforth 1969-9-6 39253 Lassen C. 14 miles SE of Milford along Long Valley Creek 1310 Comment
  CAS-BOT-BC147824  Purshia tridentata var. tridentata M. S. Taylor 1982-5-7 4431 Lassen Reno Junction on Hwy 70, just e of Beckwourth Pass 1524 Comment
  CHSC118826  Purshia tridentata var. tridentata L. P. Janeway; B. Castro 2015-6-5 11768 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 12.1 road-km south of Surprise Valley Road; 1.8 air-km east of Newland Reservoir/Bare Creek. 1959 Comment
  JEPS28802  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen ca 50 yds from Widow Lake (near outlet, near trail); Lassen Volcanic National Park 2057 Comment
  UC1128551  Purshia tridentata var. tridentata A. Simontacchi 1940-6-4 798 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1836 Comment
  UC412673  Pyrola picta Franklin P. Nutting Jul 1928 Lassen Mts. S of Eagle Lake Comment
  CAS-BOT-BC362266  Pyrrocoma carthamoides var. cusickii Ralph K. Gierisch 1968-7-11 3342 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  UC1981730  Pyrrocoma carthamoides var. cusickii Debra Valov 2010-7-17 2010101 Lassen Bieber, Lassen Co. CA., off County Rd A2 c. 8.7 km east of Hwy 299; open area in sagebrush scrub. Comment
  CAS-BOT-BC362263  Pyrrocoma carthamoides var. cusickii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50695 Lassen Steep rocky slope south and southeast of Diamond Mt. 2286 Comment
  UCR163275  Pyrrocoma hirta Jim Andre 1993-6-29 1408 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  UC35843  Pyrrocoma hirta var. lanulosa M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  UC506929  Pyrrocoma hirta var. lanulosa George A. Fischer and Irwin H. Johnson 1933-7-14 F 242 Lassen Patterson R.S. Lassen National Forest, Patterson R.S. 1737 Comment
  CHSC52666  Pyrrocoma lanceolata var. lanceolata James Jokerst 1983-7-24 1881 Lassen Near Madeline Plains. 1614 Comment
  CAS-BOT-BC362321  Pyrrocoma racemosa var. paniculata H. M. Hall 1925-8-31 12214 Lassen Amedee, Honey Lake Valley Comment
  CHSC72218  Pyrrocoma racemosa var. paniculata Vernon H. Oswald 1998-9-14 9625 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  UC735118  Quercus kelloggii Lincoln Constance 1946-7-3 3096 Lassen 2 mi nw Milford (near Honey Lake) 1280 Comment
  UCD46640  Quercus kelloggii Annie M. Alexander; Louise Kellogg 1946-8-14 5158 Lassen On hill back of town. Susanville. Comment
  UC1187154  Quercus vacciniifolia Jean Langenheim 1957-6-22 4371 Lassen nw Said Valley, ne part of Lassen County Said Valley Comment
  CHSC7774  Ranunculus Beverley J. Wise 1969-5-18 147 Lassen Gallatin Creek, 1/4 to 1/2 mi. upstream (south) from Eagle Lake. 1554 Comment
  RSA399361  Ranunculus alismifolius var. hartwegii Christopher Davidson 1975-6-6 2720 Lassen 2.8 miles W of Bogard Work Center and roadside rest on Hwy 44. 1684 Comment
  SEINET5338283  Ranunculus alismifolius var. hartwegii J. Young 1982-6-9 s.n. Lassen M.Meyers Ranch, Adin, Ca. 1372 Comment
  CHSC36348  Ranunculus aquatilis var. capillaceus M. S. Taylor 1982-6-12 4647 Lassen In pond s side of Hwy 36, n side of West Fork Susan River, at jct with Willow Creek Rd, ca. 8 mi w of Susanville. 1463 Comment
  CHSC6245  Ranunculus aquatilis var. capillaceus R. Gein 1946-6-17 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  JEPS88527  Ranunculus aquatilis var. capillaceus Vernon H. Oswald and Lowell Ahart 1996-6-24 7877 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  POM172668  Ranunculus aquatilis var. capillaceus Franklin Nutting 1894-7-25 s.n. Lassen Eagle Lake Comment
  POM98935  Ranunculus aquatilis var. capillaceus Marcus E. Jones 1897-6-29 s.n. Lassen Susanville. 1311 Comment
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Jan 10 2016
  CAS-BOT-BC379025  Ranunculus aquatilis var. diffusus M. S. Taylor 1982-6-12 4647 Lassen aquatic in still pond S side of Hwy 36, N side of west fork Susan River, at jct with Willow Creek Rd., ca. 8 mi W of Susanville Comment
  HSC23500  Ranunculus cymbalaria var. saximontanus Bill Wilson 1967-6-30 59 Lassen Slough Point, 2 mi. W across lake from Eagle Lake Biological Station, 10 mi. N of Susanville 1585 Comment
  HSC103655  Ranunculus flammula Thomas W. Nelson, Jane Nelson 1985-8-10 8026 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  CHSC60612  Ranunculus flammula var. ovalis Mary Ann Showers 1992-6-13 2549 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC61175  Ranunculus glaberrimus var. ellipticus Vernon H. Oswald; Lowell Ahart 1993-5-12 5383 Lassen Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 (to Westwood) and Poison Lake, along Pine Creek. 1737 Comment
  CHSC7184  Ranunculus glaberrimus var. ellipticus Lynn R. Thomas 1969-4-17 100 Lassen Ca. 100 yds. w of Rice Canyon Rd., down hillside and just across small creek; 5 mi n of junction with 'Back road to Litchfield;' ca. 12 mi e of Susanville. 1310 Comment
  UC1776660  Ranunculus glaberrimus var. ellipticus G. Schoolcraft 1995-4-2 2464 Lassen East end of Elysian Valley W. of Janesville 1310 Comment
  POM204150  Ranunculus occidentalis var. ultramontanus J. T. Howell 1934-6-10 11878 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  JEPS55022  Ranunculus orthorhynchus var. orthorhynchus Brown and Wieslander 1922-7-30 13 Lassen Martin Sprs. Eagle Lake Comment
  CHSC27740  Ranunculus uncinatus Jennifer Estep 1978-7-5 10 Lassen E side of Mahogany L. 2060 Comment
  CAS-BOT-BC362887  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles N. of the Eagle Lake Resort on service road #33N01 Comment
  UC747359  Ribes cereum G. Thomas Robbins 1945-10-6 2149 Lassen summit Crater Lake Mt. (above lake); Lassen National Forest 2194 Comment
  UCR17254  Ribes cereum Frank C. Vasek 1975-7-11 750711- 18 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  UCR17281  Ribes cereum Frank C. Vasek 1975-7-11 750711- 30 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC60742  Ribes cereum var. cereum Vernon H. Oswald; Lowell Ahart 1993-6-3 5487 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 7.0 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, just S of the ford over Pine Creek, between Poison Lake and Susanville. 1688 Comment
  CHSC86948  Ribes cereum var. cereum L. P. Janeway 2001-6-19 7188 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain. 1640 Comment
  JEPS94487 Image available Ribes cereum var. cereum Vernon H. Oswald and Lowell Ahart 1997-5-27 8515 Lassen 2.6 mi ne of Highway 139 (Williams Reservoir on Forest Route 38N04, between Highway 139 near Willow Creek Guard Station and Coyote Flat); Williams Reservoir on Forest Route 38N04 1682 Comment
  SEINET10871346  Ribes montigenum Mary Susan Taylor 1974-5-4 Taylor 218 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  CHSC7761  Ribes roezlii Beverly J. Wise 1969-5-17 99 Lassen 16.5 mi. N. W. of Susanville on the west side of Gallatin Creek, 1/4 mi. south of Eagle Lake. 1554 Comment
  HSC20330  Ribes roezlii Jim Vaughn 1956-8-5 Lassen Upper Hot Springs Creek, Devils Kitchen area, Mt. Lassen National Park 1829 Comment
  JEPS28697  Ribes roezlii George W. Gillett 1957-7-26 917 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 Comment
  HSC20364  Ribes velutinum L. H. Myers 1963-4-6 37 Lassen 1.0 mi. S of Janesville 1280 Comment
  JEPS87425  Ribes velutinum Vernon H. Oswald and Lowell Ahart 1993-6-14 5547 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (dunes on n side of Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of lake); Eagle Lake 1566 Comment
  UC1136911  Ribes velutinum L. R. Short and Wm. Gansberg 1936-7-9 S- 481 Lassen MDM, Burgess Spr. Exp. Range Lassen Forest 1783 Comment
  UCR248242  Ribes velutinum J. R. Keck Jr. 1977-8-10 s.n. Lassen Lassen National Forest, near Puls Camp east of Blacks Mountain 1829 Comment
  CAS-BOT-BC363012  Rigiopappus leptocladus Doris Kildale Gillespie 1930-5-12 9341 Lassen 2 miles north of Susanville on road to Alturas Comment
  HSC82187  Rigiopappus leptocladus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6036 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS29198  Rigiopappus leptocladus Lauramay T. Dempster 1961-6-17 1672 Lassen Gold Run Creek about 4 mi sw of junction with Richmond Road (s of Susanville); Gold Run Creek Comment
  CHSC36472  Rorippa nasturtium-aquaticum Jeffrey R. Peek 1982-6-4 33 Lassen Ca. 50 yds along Willow Creek from its beginning in Murrers Upper Meadow. Comment
  CHSC113076  Rorippa palustris subsp. hispida Lowell Ahart; John Dittes 2013-7-22 18864 Lassen North margin of a duck field, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  NY758403  Rorippa sinuata N. H. Holmgren 1980-7-3 9478 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. Highway 395, 16 km (10 mi) air distance northwest of Termo 1620 Comment
  UCD115377  Rorippa sinuata Verne Grant; Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting aera on west end of Section 19 on Madeline Plain. Comment
  CHSC33101  Rorippa sphaerocarpa M. S. Taylor 1974-7-10 278 Lassen In meadow, ca. 3 mi s of Gallatin Beach on s end of Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  JEPS128172  Rosa woodsii M. C. Mahoney, J. A. Nash 2017-8-7 CA 350 -87 Lassen South of Horse Lake. From Susanville take Highway 139 N. Turn right Horse Lake Road (Highway 536). Continue for 5 miles. Population is on the right in a drainage running parallel to the road. Comment
  CHSC4976  Rosa woodsii subsp. ultramontana D. L. Stites 1967-6-25 58 Lassen 2 mi w of Eagle Lake Biology Station at Pelical Point. 1524 Comment
  CHSC99109  Rosa woodsii subsp. ultramontana Lowell Ahart; John Dittes 2008-6-20 14972 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS114901  Rosa woodsii var. ultramontana Lowell Ahart, John Dittes 2008-6-20 14972 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC1128616  Rosa woodsii var. ultramontana A. Simontacchi 1940-7-3 920 Lassen 3.5 mi WSW of Harvey Mountain Lookout 1828 Comment
  CHSC60401  Rubus parviflorus Mary Ann Showers 1992-6-13 2556 Lassen Lassen Volcanic National Park. Southwest of Widow lake. 2072 Comment
  POM91623  Rubus parviflorus var. bifarius Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CAS-BOT-BC421955  Rumex acetosella Margaret Williams; Steven Williams 1974-7-26 74 -L-23 Lassen Near Hellelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  SEINET10479396  Rumex acetosella Paul Gallian, David B. Dunn 1971-6-2 Gallian 482 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus-Jeffrey Pine on mountain range to W at approximately the same altitude. 1250 Comment
  CHSC112845  Rumex crispus Lowell Ahart; John Dittes 2013-7-22 18865 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117299  Rumex crispus Lowell Ahart; John Dittes 2016-7-13 21134 Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1191289  Rumex crispus Malcolm A. Nobs and S. Galen Smith 1949-8-20 1481 Lassen 1 mi n Doyle; Long Creek Comment
  UC748311  Rumex crispus Annie M. Alexander and Louise Kellogg 1946-8-11 5151 Lassen Madeline Comment
  CAS-BOT-BC433632  Rumex lacustris Peter H. Raven; Otto T. Solbrig 1958-6-17 13266 Lassen Along United States Highway 395, 11.8 miles north-east of Litchfield Comment
  CHSC65317  Rumex occidentalis Vernon H. Oswald 1995-8-21 7210 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the marshy edge of the lake. 1859 Comment
  UCR270584  Rumex salicifolius John F. Emmel 1998-6-6 1555 Lassen Long Valley Creek at Hwy 70, c. 1.8 miles west of Hallelujah Junction 1463 Comment
  UC748281  Rumex salicifolius var. triangulivalvis Annie M. Alexander and Louise Kellogg 1946-8-11 5153 Lassen nw end Grasshopper Valley Comment
  CHSC71095  Rumex venosus Vernon Oswald; G. Schoolcraft, B. Corbin, M. Mini 1998-5-16 9086 Lassen About 1.5 mi southeast of Herlong along a dirt road on the north side of Long Valley Creek between Garnier Rd. and the RR. 1249 Comment
  CHSC77225  Rumex venosus G. Schoolcraft 1993-6-1 2267 Lassen Along Hwy 395 about 1.5 mi n. of turnoff to Wendel. 1280 Comment
  SD257945  Sagina saginoides D. F. Howe 1964-7-31 3900 Lassen Parsnip Creek, Warner Mts., Modoc National Forest. 1829 Comment
  CHSC13691  Sagittaria cuneata Patrick Balch 1935-7-17 Lassen Willow Creek Springs. Comment
  HSC95346  Salix eastwoodiae Gordon Leppig, J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC1134871  Salix exigua C. W. Hanks 1934-9-28 97 Lassen Long Valley s of Honey Lake (near Plumas Nat'l Forest); Sierraville Quadrangle Comment
  CAS-BOT-BC128221  Salix lasiandra subsp. caudata John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49221 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  RSA0045640  Salix lasiolepis var. lasiolepis Lowell Ahart, John Dittes 2008-6-22 15044 Lassen On the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4, miles (air) northeast of Bieber. 1257 Comment
  CAS-BOT-BC124634  Salix lemmonii John Thomas Howell 1976-7-20 52016 Lassen along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  POM209469  Salix lemmonii Carleton R. Ball 1932-7-24 687 Lassen Mt. Lassen Highway. 0.6 mile N of Sulphur Works Checking Station. Lassen Volcanic National Park. 1982 Comment
  CHSC66404  Salix lucida subsp. lasiandra Vernon H. Oswald; Lowell Ahart 1996-6-17 7790 Lassen Modoc Plateau. Bizz johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of the Susan River at the Hwy. 36 bridge. 1402 Comment
  CHSC99729  Salix lucida subsp. lasiandra Lowell Ahart; John Dittes 2008-6-22 15044 Lassen On the bottom of a deep ditch, on the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber. 1257 Comment
  CAS-BOT-BC126176  Salix scouleriana John Thomas Howell 1969-8-7 45885 Lassen Between Butte Lake and Cinder Cone, Lassen Park Comment
  JEPS95904  Salsola tragus Lowell Ahart and Vernon H. Oswald 1999-9-13 8205 Lassen on the east side of the dirt road and 1/2 mile south of the sign in station; Honey Lake Wildlife Area; 4 1/2 miles (air) southeast of Standish 1207 Comment
  UC1136482  Salsola tragus E. Sawyer 1935-6-27 218 Lassen Long Valley Sierraville Quad., Long Valley Comment
  UCD125448  Salvia aethiopis J. M. Tucker 1950-7-26 1979 Lassen outskirts of Susanville, on east side of town. Comment
  CHSC30567  Sambucus mexicana Sori H. Shad 1970-7-1 26 Lassen Found by spring east of Galleten Beach. 1584 Comment
  UCD127944  Sanicula bipinnatifida W. W. Robbins 1926-4-17 534 Lassen Grass Valley. Comment
  JEPS103224  Sanicula graveolens G. Schoolcraft 1992-5-1 2235 Lassen W. of Susan Hills Subd. SW. of Susanville 1341 Comment
  JEPS947  Sanicula tuberosa G. S. Crew, C. S. Robinson 6/1/1927-7/1/1927 12 Lassen near Westwood Junction (Lassen National Forest, Norval Flat, sw Lassen County); Lassen National Forest, Norval Flat 2051 Comment
  UC1598734  Sanicula tuberosa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CHSC64783  Sarcobatus vermiculatus Vernon H. Oswald 1995-5-24 6775 Lassen Modoc Plateau. Wendel Rd. (Lassen 320), 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wendel). 1219 Comment
  CHSC4972  Sarcodes sanguinea R. Carter 1967-6-22 536 Lassen ca 1/4 mi S of Five Corners on Peans Ridge Road. 1584 Comment
Read comments
Jan 31 2011
  JEPS59098  Sarcodes sanguinea Mary G. Clark 1918-5-24 Lassen Westwood, Lassen Co. Comment
  JEPS1765  Saxifraga nidifica var. nidifica Milo S. Baker 1952-5-23 12422 Lassen e of Chester (Hwy 36) Comment
  JEPS17632  Saxifraga oregana Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5403 Lassen 0.8 mi s of Lassen-Modoc County Line (below and s of Patterson Ranger Station, along East Creek, southern end of the Warner Mountains); Warner Mountains, East Creek 2011 Comment
  CHSC93678  Schoenoplectus pungens var. longispicatus Lowell Ahart; John Dittes 2005-6-2 11975 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  UC1100757  Scirpus acutus var. occidentalis Verne Grant and Irving Schneider 1947-9-6 8389 Lassen irrigation ditch w Fleming Ranch headquarters (near Wendel); , w of Fleming Ranch headquarters Comment
  RSA91471  Scirpus microcarpus F. W. Peirson 1926-6-22 6825 Lassen Small meadow above Hot Spring, Drakesbad, Lassen National Park Comment
  SEINET5324784  Scutellaria holmgreniorum A. Tiehm, Raymond Evans; James Young 1984-6-7 8591 Lassen Flats on the northwest side of Shaffer Mountain, 7.5 air miles north-northwest of Litchfield. 1372 Comment
  SEINET4855797  Scutellaria holmgreniorum Unknown 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U. S. Hwy 395 via Rye Patch Canyon, 24 km (15 mi) airline distance southeast of Ravendale. 1580 Comment
  CAS-BOT-BC214262  Scutellaria nana G. Schoolcraft 1986-6-18 1630 Lassen S. side of Smoke Creek between Shinn & Smoke Creek Ranches 1493 Comment
  HSC82199  Scutellaria nana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6054 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS88204  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1996-6-24 7863 Lassen 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, on w side of Papoose Meadows 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  POM80110  Scutellaria nana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA201224  Scutellaria nana Clarence R. Quick 1964-8-1 64 -92 Lassen Cal Mt. east of Poison Lake. 1768 Comment
  UC506981  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest 1722 Comment
  CAS-BOT-BC240084  Secale cereale Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16342 Lassen 13.5 mi. E. of Susanville Comment
  CAS-BOT-BC46020  Sedum lanceolatum Clare B. Hardham 1971-8-22 18425 Lassen Diamond Mountain 2346 Comment
  CAS-BOT-BC363324  Senecio aronicoides Alice Eastwood 1912-8-22 1819 Lassen Foot of Lassen Butte, Lassen Butte Region Comment
  CDA38660  Senecio eurycephalus var. lewisrosei B. Villegas 2010-6-17 PDR# 1535022 Lassen South of Adin; Hwy. 139 at Milepost 58. 0 Comment
  UC1586592  Senecio hydrophiloides Vernon H. Oswald 1991-5-28 4628 Lassen ca 7 mi ne Bieber (s end of Elkins Ln (100 ft s of Modoc-Lassen county line)); Ash Creek Wildlife Area 1267 Comment
  UC2027206  Senecio hydrophiloides Anthony Baniaga 2011-6-21 388 Lassen Lassen National Forest. Southern McCoy Flat. Spalding Tract quandrangle Comment
  UCD135547  Senecio integerrimus Grady L. Webster 1989-5-13 7723 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  CHSC5218  Senecio integerrimus var. exaltatus A. Santos 1946-6-13 Lassen Pine Creek, Eagle Lake. 1600 Comment
  JEPS94603  Senecio integerrimus var. exaltatus Vernon H. Oswald and Lowell Ahart 1997-5-27 8508 Lassen on Forest Route 38N04 0.3 mi e Hwy. 139 (n of Susanville (between Hwy 139 near Willow Creek Guard Station and Coyote Flat), between the road and a small creek) 1560 Comment
  RSA0124942  Senecio integerrimus var. exaltatus Philip A. Munz 1947-5-18 11861 Lassen Fredonyer Forest Public Camp Ground, west of Susanville. 1509 Comment
  CAS-BOT-BC364253  Senecio triangularis B. C. Cain 1925-8-24 108 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CHSC26149  Senecio triangularis Detzer; Sacks 1977-7-24 1 Lassen Along streambank, ca. 3 mi se of Milford, .5 mi. se of Laufman Ranger Station on unimproved USFS road. 1481 Comment
  UC1562580  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 airmiles due s of Susanville); Diamond Mts. 2255 Comment
  UCD135803  Senecio triangularis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volcanic Nat'l Park. 2286 Comment
  UC1587031  Sidalcea glaucescens G. Schoolcraft 1991-7-30 2198 Lassen East slope of Widow Mountain 1859 Comment
  CHSC27642  Sidalcea oregana George Deniso 1978-7-21 88 Lassen Colman L., W shore, SE of Eagle L. 1962 Comment
  NY54618  Sidalcea oregana var. maxima N. H. Holmgren 1980-7-3 9479 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. highway 395, 16 km (10 mi) airline distance northwest of Termo 1620 Comment
  SEINET246897  Sidalcea oregana var. maxima Unknown 1988-6-2 11704 Lassen East side of Snowshoe Mt., 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west side of the highway. 1402 Comment
  SEINET9005527  Sidalcea oregana var. spicata C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  JEPS28445  Silene bernardina George W. Gillett 1957-7-24 896 Lassen dry flats between Cameron Meadow and Snag Lake (Lassen Volcanic National Park); , btw Cameron Mdw and Snag Lake 1950 Comment
  RSA438833  Silene bernardina Christopher Davidson 1974-7-24 2485 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  CAS-BOT-BC384309  Silene bernardina George W. Gillett 1957-7-28 928 Lassen Lassen Volcanic National Park. On trail to Widow Lake above junction with Snag Lake Trail at upper end of Butte Lake 1859 Comment
  SD113389  Silene douglasii Darley F. Howe 1964-8-2 3917 Lassen East Creek, Warner Mountains, Modoc National Forest. 2010 Comment
  JEPS51005  Silene lemmonii Brown and Wieslander 1922-7-18 34 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  OBI75901  Silene lemmonii Anthony Baniaga 2011-8-1 476 Lassen Lassen Natl Forest. NW Swain Meadow. Swain Mtn qud T30N R8E sec 27 SE of NW 1764 Comment
  SEINET8223955  Silene menziesii Richard R. Halse 2006-8-3 6992 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  RSA722689  Silene menziesii subsp. menziesii R. R. Halse 2006-8-3 6992 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  CAS-BOT-BC389546  Silene nuda G. Schoolcraft 1988-7-7 1818 Lassen SE corners of Madeline Plains ca 1 mi. s. of Horne Ranch 1645 Comment
  CAS-BOT-BC389552  Silene nuda John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49488 Lassen Elysian Valley. West of Janesville 1325 Comment
  CHSC83192  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). Meadow. 1700 Comment
  UCD99020  Silene nuda E. Sawyer 1935-6-27 223 Lassen Long Valley. 1310 Comment
  CAS-BOT-BC389543  Silene nuda H. D. Ripley; R. C. Barneby 1943-6-13 5686 Lassen Milford 1264 Comment
  UC8482  Silene occidentalis subsp. occidentalis Milo S. Baker 1896-7-30 Lassen Silver Lake Comment
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Sep 9 2015
  CHSC111252  Sisymbrium altissimum L. P. Janeway; B. Castro 2012-7-2 10935 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  RSA715618  Sisymbrium altissimum L. Ahart, John Dittes 2005-6-1 11850 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  CAS-BOT-BC75078  Sisymbrium altissimum Barrett Anderson 1986-7-9 3123 Lassen Road to Day, about 2.4 km north of Route 299. 1065 Comment
  CHSC66274  Sisyrinchium bellum Vernon H. Oswald; Lowell Ahart 1996-6-24 7875 .1 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Bordering Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  UC21381  Sium suave J. Burtt Davy Jun 17 1897-Jun 24 1897 3363 Lassen Honey Lake Valley Comment
  CHSC106203  Solanum physalifolium var. nitidibaccatum Lowell Ahart; John Dittes 2010-8-31 17138 Lassen On the east side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley. 1276 Comment
  CAS-BOT-BC365367  Solidago elongata L. S. Smith 1918-8-11 1022 Lassen Modoc National Forest. Camp One Comment
  POM38169  Sonchus asper Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CDA37488  Sparganium emersum subsp. emersum Gordon Leppig 1998-8-17 1052 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  CHSC27654  Sparganium emersum subsp. emersum Jerry Snodgrass 1978-7-11 50 b Lassen Papoose Creek, SE corner of Eagle L. Meadow; in pool. 1584 Comment
  CHSC59159  Sparganium emersum subsp. emersum Vernon H. Oswald; Lowell Ahart 1992-7-16 5119 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. In streamlets on the meadow. 1719 Comment
  CHSC66424  Sparganium natans Vernon H. Oswald 1996-6-15 7766 Lassen Modoc Plateau. Papoose Meadows located ca. 2 mi S of Gallatin Beach at Eagle Lake, NW of Susanville. In Papoose Creek where it leaves the meadow. 1633 Comment
  POM82495  Sphenosciadium capitellatum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC1037224  Spiraea douglasii Leo Whitney 1934-7-2 1592 Lassen ca 14 mi w Eagle Lake (Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  CHSC61074  Spiranthes porrifolia Vernon H. Oswald 1993-8-3 5754 Lassen Cooper Swamp located E of Siver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  UC1037284  Spiranthes romanzoffiana Leo Whitney 1934-7-21 1710 Lassen Harvey Valley Spring Lassen National Forest, Harvey Valley (ca 14 mi w of Eagle Lake) 1737 Comment
  CHSC5276  Stachys ajugoides var. rigida L. Harman 1946-6-26 Lassen Pine Creek, Eagle Lake. 1584 Comment
  SD8165  Stellaria calycantha Mrs. R. M. Austin August 1882 Lassen Comment
  SEINET5337330  Stellaria longipes C. G. Gulling 1905-1 1551 Lassen Big Meadows Comment
  SEINET10965514  Stellaria longipes Mary Susan Taylor 1982-6-12 Taylor 4660 Lassen T25N R17E se sec 8. Doyle quad. In sandy Sagebrush Scrub, in Doyle, ca. 1/2 mi e of Hwy 395. Comment
  CAS-BOT-BC391078  Stellaria longipes subsp. longipes Louella Bass 1973-5-29 87 Lassen Elysian Valley 1325 Comment
  SEINET10537644  Stellaria longipes var. longipes Mary Merello 1993-6-28 Merello 756 Lassen Lassen National Forest. At end of Forest Service Road 31N01 at lake. Pine woodland. 1740 Comment
  UC1523750  Stellaria longipes var. longipes Gary Schoolcraft 1981-6-25 484 Lassen e fork Willard Creek 1584 Comment
  JEPS94472  Stenotus acaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8507 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Hwy 139 near Willow Creek Guard Station and Coyote Flat, betw road and creek paralleling rd to north); Forest Route 38N04 1560 Comment
  UC86569  Stenotus acaulis T. S. Brandegee 1892-7-2 Lassen Near Susanville Comment
  CDA18319  Stephanomeria exigua G. D. Barbe 1974-8-2 1930 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC375447  Stephanomeria exigua subsp. exigua R. F. Thorne; C. W. Tilforth 1969-9-6 39261 Lassen On roadside c. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake) 1280 Comment
  CAS-BOT-BC375595  Stephanomeria lactucina Margaret Williams; Steven Williams 1974-7-26 74 -L-12 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  POM147898  Stephanomeria lactucina J. B. Feudge 1927-7-20 1781 Lassen Westwood. Comment
  UCR57502  Stephanomeria spinosa R. D. Goeden, Don W. Ricker 1989-8-22 890822- 10 Lassen Modoc Plateau, Horse Lake Road, just east of Hansen Road, SW of Ravendale 1567 Comment
  CAS-BOT-BC322924  Stephanomeria tenuifolia Louella Bass No date on label. s.n. Lassen Elysian Valley, Sierra Nevada Comment
  RSA518409  Stephanomeria virgata George K. Helmkamp 1990-9-23 E 14 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  CHSC66853  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1996-10-3 8296 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 13.4 mi N of Smoke Creek Ranch Rd. Roadside. 1524 Comment
  HSC26013  Stipa hymenoides D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19297 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  HSC22318  Stipa nelsonii subsp. dorei D. E. Anderson 1969-7-5 4992 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  CAS-BOT-BC61289  Streptanthus cordatus var. cordatus Alice Eastwood; John Thomas Howell 1940-6-15 8309 Lassen Willow Creek near Hayden Hill. Comment
  UC768789  Suaeda calceoliformis R. F. Hoover 1940-9-29 4641 Lassen Litchfield Comment
  UC1537510  Swertia albicaulis Gordon H. True Jr. 1936-6-25 539 Lassen e of Harvey Ranger Station; Harvey Valley 1767 Comment
  CHSC60831  Swertia albicaulis var. albicaulis Vernon H. Oswald; Lowell Ahart 1993-6-28 5605 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  JEPS87423  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-28 5605 Lassen ne of Poison Lake (Road 35N04 at Aspen Well, n of Hwy 44 on nw edge of Harvey Valley); Harvey Valley, Aspen Well 1725 Comment
  UC1123453  Swertia albicaulis var. albicaulis Robert W. Gardner 1937-6-16 G- 13 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1798 Comment
  UC477492 Image available Swertia albicaulis var. nitida A. G. Brenneis 1928-5-29 6 Lassen 1 to 1.5 mi se Willow Sprgs.; Lassen Forest; Lassen Forest, Lassen Co. 1371 Comment
  JEPS123497  Symphoricarpos longiflorus Wilson Collison, Jaileen Merced 2015-8-8 CA 320 -143 Lassen To Highway 139 W (North) from Termo - Grasshopper Road continue 4.5 mi (1 mile after entering forest). Turn right on to Grand Road (37N29). Continue uphill (East), right at 1st fork, straight at 2nd. Comment
  CAS-BOT-BC245874  Symphoricarpos rotundifolius T. S. Brandegee 1892-6-26 s.n. Lassen Milford Comment
  CHSC23553  Symphoricarpos rotundifolius var. rotundifolius W. O. Baum 1971-7-5 21 Lassen N slope of Gallatin Peak. 2011 Comment
  CHSC36147  Symphoricarpos rotundifolius var. rotundifolius George Deniso 1978-7-21 95 Lassen Several meters S of Colman Lake, SE of Eagle L., 1962 Comment
  CHSC60349  Symphoricarpos rotundifolius var. rotundifolius Mary Ann Showers 1992-6-13 2532 Lassen Lassen Volcanic National Park. East shore of Butte Lake, ca 0.3 miles south of Butte Creek outlet. 1841 Comment
  CAS-BOT-BC97525  Symphyotrichum ascendens Elmer I. Applegate 1923-9-30 4036 Lassen Constantia, Honey Lake Valley Comment
  CHSC76081  Symphyotrichum ascendens Lowell Ahart; Vernon H. Oswald 1999-9-13 8230 Lassen Along the south side of the dirt road, Willow Creek is on the south side of the road, about 250 yards east of the sign-in station along Highway 139, Willow Creek Wildlife Area. 1463 Comment
  UC762731  Symphyotrichum ascendens R. F. Hoover 1940-10-1 4654 Lassen Janesville Comment
  CAS-BOT-BC97526  Symphyotrichum ascendens Margaret Williams; Louella Bass 1972-10-22 EV 4 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  HSC103616  Symphyotrichum bracteolatum Thomas W. Nelson, Jane Nelson 1985-8-10 8007 Lassen Along north side of Silver Lake 1829 Comment
  SD64326  Symphyotrichum campestre Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on Highway 395 1675 Comment
  CAS-BOT-BC98931  Symphyotrichum foliaceum var. parryi B. Bartholomew; B. Anderson 1988-7-22 4495 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  UC2027325  Symphyotrichum foliaceum var. parryi Anthony Baniaga 2011-9-8 512 Lassen Lassen National Forest. Caribou Wilderness; N of Long Lake. Red Cinder quadrangle. Comment
  CAS-BOT-BC98932  Symphyotrichum foliaceum var. parryi Alice Eastwood 1912-8-22 1831 Lassen Trail from Morgan's Springs to Lassen Butte Comment
  CAS-BOT-BC98934  Symphyotrichum foliaceum var. parryi Alice Eastwood 1912-8-22 1917 Lassen Battle Creek Meadows - Lassen Butte Region Comment
  CHSC59076  Symphyotrichum frondosum Vernon H. Oswald; Lowell Ahart 1992-8-25 5185 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1851 Comment
  CHSC76082  Symphyotrichum frondosum Lowell Ahart; Vernon H. Oswald 1999-9-13 8210 Lassen Just south of the parking area, about 1 mile south of the sign-in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UCR67451  Symphyotrichum lanceolatum var. hesperium George K. Helmkamp 1990-9-23 A- 9 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  UCD136611  Symphyotrichum lanceolatum var. hesperium G. Schoolcraft 1996-9-9 2583 Lassen lower end of Willow Creek. 1310 Comment
  SEINET11686811  Taeniatherum caput-medusae A. Tiehm, Evans, R.; Young, J. 1984-1 8597 Lassen NW side of Shaffer Mountain, 9 air mi NNW of Litchfield 1387 Comment
  CHSC36471  Taraxia tanacetifolia Jeffrey R. Peek 1982-6-4 32 Lassen Ca. 3/4 mi n Murrers Upper Meadow, ca. 20 yds e of road. Comment
  UC20508  Taraxia tanacetifolia Mrs. C. C. Bruce June 1898 2203 Lassen Susanville Comment
  CAS-BOT-BC329049  Tetradymia canescens John Thomas Howell 1961-9-25 36972 Lassen East side of Beckwourth Pass 1554 Comment
  UC1136973  Tetradymia canescens L. R. Short 1936-9-13 S 503 Lassen Burgess Spring Experimental Range Lassen Forest 1761 Comment
  RSA94945  Tetradymia canescens F. W. Peirson 1932-7-20 10354 Lassen 20 miles S of Susanville. Comment
  CDA20359  Tetradymia glabrata D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC33329  Tetradymia glabrata P. Reynolds 1979-7-4 2 Lassen 1 mi. ne of Wendel. Base of Wendel canyon. 1295 Comment
  OBI75883  Tetradymia glabrata Anthony Baniaga 2011-7-1 416 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1442 Comment
  UC1567439  Tetradymia glabrata G. Schoolcraft 1989-5-31 1881 Lassen near Skedaddle Creek crossing (Sand Pass Rd) 1249 Comment